meta_parameters* radarsat2meta(radarsat2_meta *radarsat2)
{
ymd_date date, imgStartDate, imgStopDate;
hms_time time, imgStartTime, imgStopTime;
meta_parameters *meta;
char *mon[13]= {"","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
"Oct","Nov","Dec"
};
double lat, lon, height, re, rp;
// Allocate memory for metadata structure
meta = raw_init();
// General block
strcpy(meta->general->basename, radarsat2->filename);
strcpy(meta->general->sensor, radarsat2->satellite);
strcpy(meta->general->sensor_name, radarsat2->sensor);
strcpy(meta->general->mode, radarsat2->beamModeMnemonic);
sprintf(meta->general->processor, "%s %s",
radarsat2->processingFacility, radarsat2->softwareVersion);
meta->general->data_type = REAL32;
if (strcmp_case(radarsat2->dataType, "COMPLEX") == 0)
meta->general->image_data_type = COMPLEX_IMAGE;
//else if (strcmp_case(radarsat2->dataType, "DETECTED") == 0)
// meta->general->image_data_type = AMPLITUDE_IMAGE;
meta->general->radiometry = r_AMP;
date_terrasar2date(radarsat2->zeroDopplerAzimuthTime, &date, &time);
sprintf(meta->general->acquisition_date, "%02d-%s-%4d %02d:%02d:%02.0f",
date.day, mon[date.month], date.year, time.hour, time.min, time.sec);
//meta->general->orbit = radarsat2->absOrbit;
if (strcmp_case(radarsat2->passDirection, "ASCENDING") == 0)
meta->general->orbit_direction = 'A';
else if (strcmp_case(radarsat2->passDirection, "DESCENDING") == 0)
meta->general->orbit_direction = 'D';
if (strcmp_case(radarsat2->dataType, "COMPLEX") == 0)
meta->general->band_count = radarsat2->band_count * 2;
else
meta->general->band_count = radarsat2->band_count;
strcpy(meta->general->bands, radarsat2->bands);
meta->general->line_count = radarsat2->numberOfLines;
meta->general->sample_count = radarsat2->numberOfSamplesPerLine;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = radarsat2->sampledPixelSpacing;
meta->general->y_pixel_size = radarsat2->sampledLineSpacing;
//meta->general->center_latitude = radarsat2->sceneCenterCoordLat;
//meta->general->center_longitude = radarsat2->sceneCenterCoordLon;
meta->general->re_major = radarsat2->semiMajorAxis;
meta->general->re_minor = radarsat2->semiMinorAxis;
// SAR block
meta->sar = meta_sar_init();
if (strcmp_case(radarsat2->productType, "SLC") == 0)
meta->sar->image_type = 'S';
if (strcmp_case(radarsat2->antennaPointing, "LEFT") == 0)
meta->sar->look_direction = 'L';
else if (strcmp_case(radarsat2->antennaPointing, "RIGHT") == 0)
meta->sar->look_direction = 'R';
meta->sar->azimuth_look_count = radarsat2->numberOfAzimuthLooks;
meta->sar->range_look_count = radarsat2->numberOfRangeLooks;
meta->sar->deskewed = 1;
meta->sar->original_line_count = meta->general->line_count;
meta->sar->original_sample_count = meta->general->sample_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
date_terrasar2date(radarsat2->zeroDopplerTimeFirstLine,
&imgStartDate, &imgStartTime);
date_terrasar2date(radarsat2->zeroDopplerTimeLastLine,
&imgStopDate, &imgStopTime);
meta->sar->azimuth_time_per_pixel =
date_difference(&imgStopDate, &imgStopTime,
&imgStartDate, &imgStartTime) / meta->general->line_count;
meta->sar->range_time_per_pixel =
meta->general->x_pixel_size * 2.0 / speedOfLight;
meta->sar->slant_range_first_pixel = radarsat2->slantRangeNearEdge;
meta->sar->slant_shift = 0.0;
meta->sar->time_shift = 0.0;
meta->sar->wavelength = SPD_LIGHT / radarsat2->radarCenterFrequency;
meta->sar->prf = radarsat2->pulseRepetitionFrequency;
meta->sar->satellite_height = radarsat2->satelliteHeight;
meta->sar->azimuth_processing_bandwidth =
radarsat2->totalProcessedAzimuthBandwidth;
// FIXME: chirp_rate ???
meta->sar->pulse_duration = radarsat2->pulseLength;
meta->sar->range_sampling_rate = radarsat2->adcSamplingRate;
if (strcmp_case(radarsat2->polarizations, "HH,VV,HV,VH") == 0) {
meta->general->image_data_type = POLARIMETRIC_IMAGE;
strcpy(meta->sar->polarization, "quad-pol");
}
else
strcpy(meta->sar->polarization, radarsat2->polarizations);
if (strcmp_case(radarsat2->dataType, "COMPLEX") == 0)
meta->sar->multilook = FALSE;
// FIXME: pitch, roll, yaw ???
// Doppler block
meta->doppler = radarsat2->doppler;
// State vectors
meta->state_vectors = radarsat2->state_vectors;
// Propagate the state vectors to start, center, end
int vector_count = 3;
double data_int = date_difference(&imgStopDate, &imgStopTime,
&imgStartDate, &imgStartTime) / 2.0;
while (fabs(data_int) > 10.0) {
data_int /= 2;
vector_count = vector_count*2-1;
}
propagate_state(meta, vector_count, data_int);
// Location block
meta->location = meta_location_init();
meta->location->lat_start_near_range = radarsat2->sceneCornerCoord1Lat;
meta->location->lon_start_near_range = radarsat2->sceneCornerCoord1Lon;
meta->location->lat_start_far_range = radarsat2->sceneCornerCoord2Lat;
meta->location->lon_start_far_range = radarsat2->sceneCornerCoord2Lon;
meta->location->lat_end_near_range = radarsat2->sceneCornerCoord3Lat;
meta->location->lon_end_near_range = radarsat2->sceneCornerCoord3Lon;
meta->location->lat_end_far_range = radarsat2->sceneCornerCoord4Lat;
meta->location->lon_end_far_range = radarsat2->sceneCornerCoord4Lon;
// Still need to determine center location, really only needed to get
// the earth radius straight
meta->general->center_longitude = (radarsat2->sceneCornerCoord1Lon +
radarsat2->sceneCornerCoord2Lon +
radarsat2->sceneCornerCoord3Lon +
radarsat2->sceneCornerCoord4Lon) / 4.0;
location_to_latlon(meta, meta->general->sample_count/2,
meta->general->line_count/2, 0.0, &lat, &lon, &height);
meta->general->center_latitude = lat;
meta->general->center_longitude = lon;
lat = meta->general->center_latitude * D2R;
re = meta->general->re_major;
rp = meta->general->re_minor;
meta->sar->earth_radius =
(re*rp) / sqrt(rp*rp*cos(lat)*cos(lat)+re*re*sin(lat)*sin(lat));
meta->sar->satellite_height += meta->sar->earth_radius;
return meta;
}
meta_parameters* terrasar2meta(terrasar_meta *terrasar)
{
ymd_date date, imgStartDate, imgStopDate;
hms_time time, imgStartTime, imgStopTime;
meta_parameters *meta;
char *mon[13]={"","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
"Oct","Nov","Dec"};
double lat, re, rp;
// Allocate memory for metadata structure
meta = raw_init();
// General block
strcpy(meta->general->basename, terrasar->filename);
strcpy(meta->general->sensor, terrasar->mission);
strcpy(meta->general->sensor_name, terrasar->sensor);
strcpy(meta->general->mode, terrasar->elevationBeamConfiguration);
strcpy(meta->general->processor, "");
// terrsar->imagingMode determines stripMap, scanSAR and spotLight modes
// not using the information yet
meta->general->data_type = REAL32;
if (strcmp_case(terrasar->imageDataType, "COMPLEX") == 0)
meta->general->image_data_type = COMPLEX_IMAGE;
else if (strcmp_case(terrasar->imageDataType, "DETECTED") == 0)
meta->general->image_data_type = AMPLITUDE_IMAGE;
meta->general->radiometry = r_AMP;
date_terrasar2date(terrasar->azimuthTimeUTC, &date, &time);
sprintf(meta->general->acquisition_date, "%02d-%s-%4d %02d:%02d:%02.0f",
date.day, mon[date.month], date.year, time.hour, time.min, time.sec);
meta->general->orbit = terrasar->absOrbit;
if (strcmp_case(terrasar->orbitDirection, "ASCENDING") == 0)
meta->general->orbit_direction = 'A';
else if (strcmp_case(terrasar->orbitDirection, "DESCENDING") == 0)
meta->general->orbit_direction = 'D';
meta->general->band_count = terrasar->numberOfLayers;
meta->general->line_count = terrasar->numberOfRows;
meta->general->sample_count = terrasar->numberOfColumns;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = terrasar->rangeResolution;
meta->general->y_pixel_size = terrasar->azimuthResolution;
meta->general->center_latitude = terrasar->sceneCenterCoordLat;
meta->general->center_longitude = terrasar->sceneCenterCoordLon;
meta->general->re_major = 6378137.000; // WGS84
meta->general->re_minor = 6356752.314; // WGS84
// SAR block
meta->sar = meta_sar_init();
if (strcmp_case(terrasar->projection, "SLANTRANGE") == 0)
meta->sar->image_type = 'S';
else if (strcmp_case(terrasar->projection, "GROUNDRANGE") == 0)
meta->sar->image_type = 'G';
// FIXME: MAP case not covered yet
if (strcmp_case(terrasar->lookDirection, "LEFT") == 0)
meta->sar->look_direction = 'L';
else if (strcmp_case(terrasar->lookDirection, "RIGHT") == 0)
meta->sar->look_direction = 'R';
meta->sar->azimuth_look_count = terrasar->azimuthLooks;
meta->sar->range_look_count = terrasar->rangeLooks;
if (strcmp_case(terrasar->imageCoordinateType, "ZERODOPPLER") == 0)
meta->sar->deskewed = 1;
meta->sar->original_line_count = meta->general->line_count;
meta->sar->original_sample_count = meta->general->sample_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
if (meta->sar->image_type == 'S') {
meta->sar->range_time_per_pixel = terrasar->rowSpacing;
meta->sar->azimuth_time_per_pixel = terrasar->columnSpacing;
}
else if (meta->sar->image_type == 'G') {
meta->sar->range_time_per_pixel =
(terrasar->rangeTimeLast - terrasar->rangeTimeFirst) /
terrasar->numberOfColumns;
meta->general->x_pixel_size = terrasar->columnSpacing;
meta->general->y_pixel_size = terrasar->rowSpacing;
}
meta->sar->slant_range_first_pixel =
terrasar->rangeTimeFirst * SPD_LIGHT / 2.0;
meta->sar->slant_shift = 0.0;
meta->sar->time_shift = 0.0;
meta->sar->wavelength = SPD_LIGHT / terrasar->centerFrequency;
meta->sar->prf = terrasar->prf;
lat = meta->general->center_latitude * D2R;
re = meta->general->re_major;
rp = meta->general->re_minor;
meta->sar->earth_radius =
(re*rp) / sqrt(rp*rp*cos(lat)*cos(lat)+re*re*sin(lat)*sin(lat));
// FIXME: Doppler values need to be filled in
meta->sar->azimuth_processing_bandwidth =
terrasar->totalProcessedAzimuthBandwidth;
// FIXME: chirp_rate ???
meta->sar->pulse_duration = terrasar->pulseLength;
meta->sar->range_sampling_rate = terrasar->rsf;
strcpy(meta->sar->polarization, terrasar->polarisationMode);
if (strcmp_case(terrasar->imageDataType, "COMPLEX") == 0)
meta->sar->multilook = FALSE;
else if (strcmp_case(terrasar->imageDataType, "DETECTED") == 0)
meta->sar->multilook = TRUE;
// FIXME: pitch, roll, yaw ???
// Doppler block
meta->doppler = terrasar->doppler;
// State vectors
meta->state_vectors = terrasar->state_vectors;
// Propagate the state vectors to start, center, end
date_terrasar2date(terrasar->sceneStart, &imgStartDate, &imgStartTime);
date_terrasar2date(terrasar->sceneStop, &imgStopDate, &imgStopTime);
int vector_count = 3;
double data_int = date_difference(&imgStopDate, &imgStopTime,
&imgStartDate, &imgStartTime) / 2.0;
while (fabs(data_int) > 10.0) {
data_int /= 2;
vector_count = vector_count*2-1;
}
propagate_state(meta, vector_count, data_int);
data_int = date_difference(&imgStopDate, &imgStopTime,
&imgStartDate, &imgStartTime);
if (meta->sar->image_type == 'G')
meta->sar->azimuth_time_per_pixel = data_int / meta->general->line_count;
if (meta->general->orbit_direction == 'A') {
meta->sar->time_shift = data_int;
meta->sar->azimuth_time_per_pixel *= -1.0;
}
data_int /= 2.0;
stateVector stVec = meta_get_stVec(meta, data_int);
meta->sar->satellite_height = sqrt(stVec.pos.x * stVec.pos.x +
stVec.pos.y * stVec.pos.y +
stVec.pos.z * stVec.pos.z);
// Location block
meta->location = meta_location_init();
meta->location->lat_start_near_range = terrasar->sceneCornerCoord1Lat;
meta->location->lon_start_near_range = terrasar->sceneCornerCoord1Lon;
meta->location->lat_start_far_range = terrasar->sceneCornerCoord2Lat;
meta->location->lon_start_far_range = terrasar->sceneCornerCoord2Lon;
meta->location->lat_end_near_range = terrasar->sceneCornerCoord3Lat;
meta->location->lon_end_near_range = terrasar->sceneCornerCoord3Lon;
meta->location->lat_end_far_range = terrasar->sceneCornerCoord4Lat;
meta->location->lon_end_far_range = terrasar->sceneCornerCoord4Lon;
return meta;
}
meta_parameters* uavsar_insar2meta(uavsar_insar *params)
{
meta_parameters *meta;
// Allocate memory for metadata structure
meta = raw_init();
// General block
sprintf(meta->general->basename, "%s", params->site);
sprintf(meta->general->sensor, "UAVSAR");
strcpy(meta->general->sensor_name, "InSAR");
strcpy(meta->general->processor, "JPL version ");
strcat(meta->general->processor, params->processor);
if (params->type == INSAR_AMP || params->type == INSAR_AMP_GRD) {
if (params->type == INSAR_AMP)
strcpy(meta->general->mode, "AMP");
else if (params->type == INSAR_AMP_GRD)
strcpy(meta->general->mode, "AMP_GRD");
meta->general->image_data_type = AMPLITUDE_IMAGE;
}
else if (params->type == INSAR_INT || params->type == INSAR_INT_GRD) {
if (params->type == INSAR_INT)
strcpy(meta->general->mode, "INT");
else if (params->type == INSAR_INT_GRD)
strcpy(meta->general->mode, "INT_GRD");
meta->general->image_data_type = INTERFEROGRAM;
}
else if (params->type == INSAR_UNW || params->type == INSAR_UNW_GRD) {
if (params->type == INSAR_UNW)
strcpy(meta->general->mode, "UNW");
else if (params->type == INSAR_UNW_GRD)
strcpy(meta->general->mode, "UNW_GRD");
meta->general->image_data_type = UNWRAPPED_PHASE;
}
else if (params->type == INSAR_COR || params->type == INSAR_COR_GRD) {
if (params->type == INSAR_COR)
strcpy(meta->general->mode, "COR");
else if (params->type == INSAR_COR_GRD)
strcpy(meta->general->mode, "COR_GRD");
meta->general->image_data_type = COHERENCE_IMAGE;
}
else if (params->type == INSAR_HGT_GRD) {
strcpy(meta->general->mode, "HGT_GRD");
meta->general->image_data_type = DEM;
}
else
strcpy(meta->general->mode, "unknown");
meta->general->data_type = REAL32;
strcpy(meta->general->acquisition_date, params->acquisition_date);
meta->general->band_count = 1;
meta->general->line_count = params->row_count;
meta->general->sample_count = params->column_count;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = params->range_pixel_spacing;
meta->general->y_pixel_size = fabs(params->azimuth_pixel_spacing);
meta->general->re_major = params->semi_major;
double a = params->semi_major;
double ecc2 = params->eccentricity;
meta->general->re_minor = sqrt((1-ecc2)*a*a);
// no information on bit error rate, missing lines and no data
// SAR block
meta->sar = meta_sar_init();
strcpy(meta->sar->polarization, params->polarization);
if (strcmp_case(params->projection, "SCX") == 0)
meta->sar->image_type = 'S';
else if (strcmp_case(params->projection, "EQA") == 0)
meta->sar->image_type = 'P';
if (strcmp_case(params->look_direction, "Left") == 0)
meta->sar->look_direction = 'L';
else if (strcmp_case(params->look_direction, "Right") == 0)
meta->sar->look_direction = 'R';
meta->sar->azimuth_look_count = params->azimuth_look_count;
meta->sar->range_look_count = params->range_look_count;
meta->sar->multilook = 1;
meta->sar->deskewed = 1;
meta->sar->original_line_count = params->row_count;
meta->sar->original_sample_count = params->column_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
// no information on azimuth and range time per pixel
meta->sar->time_shift = 0.0;
meta->sar->slant_shift = 0.0;
meta->sar->slant_range_first_pixel = params->slant_range_first_pixel * 1000.0;
meta->sar->wavelength = params->wavelength / 100.0;
// no information on pulse repetition frequency
// no information on earth radius and satellite height
// no time information
// no Doppler information
meta->sar->yaw = params->yaw;
meta->sar->pitch = params->pitch;
meta->sar->roll = params->roll;
meta->sar->azimuth_processing_bandwidth = params->bandwidth;
// no chirp rate information
meta->sar->pulse_duration = params->pulse_length / 1000.0;
// no information on range sampling rate
// FIXME: check polarizations for interferometric/polarimetric data
// FIXME: multilook flag depends on data type
// UAVSAR block
meta->uavsar = meta_uavsar_init();
strcpy(meta->uavsar->id, params->id);
meta->uavsar->scale_factor = 1.0;
meta->uavsar->gps_altitude = params->altitude;
meta->uavsar->lat_peg_point = params->lat_peg_point;
meta->uavsar->lon_peg_point = params->lon_peg_point;
meta->uavsar->head_peg_point = params->head_peg_point;
meta->uavsar->along_track_offset = params->along_track_offset;
meta->uavsar->cross_track_offset = params->cross_track_offset;
// Projection block
if (params->type >= INSAR_AMP_GRD && params->type <= INSAR_HGT_GRD) {
meta->projection = meta_projection_init();
meta->projection->type = LAT_LONG_PSEUDO_PROJECTION;
strcpy (meta->projection->units, "degrees");
if (params->along_track_offset >= 0.0)
meta->projection->hem = 'N';
else
meta->projection->hem = 'S';
meta->projection->re_major = meta->general->re_major;
meta->projection->re_minor = meta->general->re_minor;
meta->projection->height = 0.0;
meta->projection->spheroid = WGS84_SPHEROID;
meta->projection->datum = WGS84_DATUM;
// FIXME: Check that the following is correct - needs some data
// Coordinate reference: Point
// UAVSAR lat/lon projected data is calculated from center
// pixel. Thus we have to add in a half-pixel shift.
meta->projection->startX =
params->cross_track_offset - params->range_pixel_spacing / 2.0;
meta->projection->startY =
params->along_track_offset - params->azimuth_pixel_spacing / 2.0;
meta->projection->perX = params->range_pixel_spacing;
meta->projection->perY = params->azimuth_pixel_spacing;
meta->general->center_latitude = params->along_track_offset +
params->azimuth_pixel_spacing * params->row_count / 2.0;
meta->general->center_longitude = params->cross_track_offset +
params->range_pixel_spacing * params->column_count / 2.0;
}
// Location block
meta->location = meta_location_init();
meta->location->lat_start_near_range = params->lat_upper_left;
meta->location->lon_start_near_range = params->lon_upper_left;
meta->location->lat_start_far_range = params->lat_upper_right;
meta->location->lon_start_far_range = params->lon_upper_right;
meta->location->lat_end_near_range = params->lat_lower_left;
meta->location->lon_end_near_range = params->lon_lower_left;
meta->location->lat_end_far_range = params->lat_lower_right;
meta->location->lon_end_far_range = params->lon_lower_right;
return meta;
}
meta_parameters *iso2meta(iso_meta *iso)
{
int ii;
meta_parameters *meta = raw_init();
char str[30];
// Convenience pointers
iso_generalHeader *header = iso->generalHeader;
iso_productComponents *comps = iso->productComponents;
iso_productInfo *info = iso->productInfo;
iso_productSpecific *spec = iso->productSpecific;
iso_setup *setup = iso->setup;
iso_processing *proc = iso->processing;
iso_instrument *inst = iso->instrument;
iso_platform *platform = iso->platform;
iso_productQuality *quality = iso->productQuality;
meta->meta_version = 3.5;
// General block
for (ii=0; ii<comps->numAnnotations; ii++)
if (comps->annotation[ii].type == MAIN_TYPE)
strncpy(meta->general->basename, comps->annotation[ii].file.name, 256);
strcpy(meta->general->sensor, header->mission);
strcpy(meta->general->sensor_name, info->sensor);
strcpy(meta->general->mode, info->elevationBeamConfiguration);
strcpy(meta->general->receiving_station, info->receivingStation);
strcpy(meta->general->processor, header->generationSystem);
if (info->imageDataType == DETECTED_DATA_TYPE &&
info->imageDataDepth == 8)
meta->general->data_type = ASF_BYTE;
else if (info->imageDataType == DETECTED_DATA_TYPE &&
info->imageDataDepth == 16)
meta->general->data_type = INTEGER16;
else if (info->imageDataType == DETECTED_DATA_TYPE &&
info->imageDataDepth == 32)
// assumption here is that we are not dealing with INTERGER32
meta->general->data_type = REAL32;
else if (info->imageDataType == DETECTED_DATA_TYPE &&
info->imageDataDepth == 64)
meta->general->data_type = REAL64;
else if (info->imageDataType == COMPLEX_DATA_TYPE &&
info->imageDataDepth == 8)
meta->general->data_type = COMPLEX_BYTE;
else if (info->imageDataType == COMPLEX_DATA_TYPE &&
info->imageDataDepth == 16)
meta->general->data_type = COMPLEX_INTEGER16;
else if (info->imageDataType == COMPLEX_DATA_TYPE &&
info->imageDataDepth == 32)
// assumption here is that we are not dealing with COMPLEX_INTEGER32
meta->general->data_type = COMPLEX_REAL32;
else if (info->imageDataType == COMPLEX_DATA_TYPE &&
info->imageDataDepth == 64)
meta->general->data_type = COMPLEX_REAL64;
if (info->imageDataType == RAW_DATA_TYPE)
meta->general->image_data_type = RAW_IMAGE;
else if (info->imageDataType == COMPLEX_DATA_TYPE)
meta->general->image_data_type = COMPLEX_IMAGE;
else if (info->imageDataType == DETECTED_DATA_TYPE)
meta->general->image_data_type = AMPLITUDE_IMAGE;
// more detailed mapping of imageDataType will probably need pixelValueID
// context
if (strcmp_case(info->pixelValueID, "RADAR BRIGHTNESS") == 0)
meta->general->radiometry = r_AMP;
// dealing with any form of calibration not implemented yet
dateTime2str(info->sceneCenterCoord.azimuthTimeUTC,
meta->general->acquisition_date);
meta->general->orbit = info->absOrbit;
if (info->orbitDirection == ASCENDING)
meta->general->orbit_direction = 'A';
else if (info->orbitDirection == DESCENDING)
meta->general->orbit_direction = 'D';
meta->general->frame = setup->frameID;
meta->general->band_count = comps->numLayers;
strcpy(meta->general->bands, polLayer2str(comps->imageData[0].polLayer));
for (ii=1; ii<comps->numLayers; ii++) {
sprintf(str, ", %s", polLayer2str(comps->imageData[ii].polLayer));
strcat(meta->general->bands, str);
}
meta->general->line_count = info->numberOfRows;
meta->general->sample_count = info->numberOfColumns;
meta->general->start_line = info->startRow;
meta->general->start_sample = info->startColumn;
meta->general->x_pixel_size = info->groundRangeResolution;
meta->general->y_pixel_size = info->azimuthResolution;
meta->general->center_latitude = info->sceneCenterCoord.lat;
meta->general->center_longitude = info->sceneCenterCoord.lon;
spheroid_type_t spheroid = WGS84_SPHEROID; // FIXME: needs to know reference
spheroid_axes_lengths(spheroid,
&meta->general->re_major, &meta->general->re_minor);
meta->general->bit_error_rate = quality->imageDataQuality[0].bitErrorRate;
meta->general->missing_lines = quality->imageDataQuality[0].missingLines;
meta->general->no_data = (float) quality->imageDataQuality[0].noData;
// SAR block
meta->sar = meta_sar_init();
if (info->projection == SLANTRANGE_PROJ)
meta->sar->image_type = 'S';
else if (info->projection == GROUNDRANGE_PROJ)
meta->sar->image_type = 'G';
else if (info->projection == MAP_PROJ)
meta->sar->image_type = 'P';
if (setup->lookDirection == RIGHT_LOOK)
meta->sar->look_direction = 'R';
else if (setup->lookDirection == LEFT_LOOK)
meta->sar->look_direction = 'L';
meta->sar->azimuth_look_count = info->azimuthLooks;
meta->sar->range_look_count = info->rangeLooks;
if (spec->imageCoordinateType == RAW_COORD)
meta->sar->deskewed = FALSE;
else if (spec->imageCoordinateType == ZERODOPPLER)
meta->sar->deskewed = TRUE;
meta->general->line_scaling = info->rowScaling;
meta->general->sample_scaling = info->columnScaling;
meta->sar->range_time_per_pixel = info->columnSpacing;
meta->sar->azimuth_time_per_pixel = info->rowSpacing;
meta->sar->slant_shift = spec->slantRangeShift;
//meta->sar->slant_range_first_pixel = info->rangeTimeFirstPixel * SPD_LIGHT;
meta->sar->slant_range_first_pixel = spec->projectedSpacingSlantRange;
meta->sar->wavelength = SPD_LIGHT / inst->centerFrequency;
meta->sar->prf = spec->commonPRF;
meta->sar->earth_radius = info->earthRadius;
meta->sar->satellite_height = info->satelliteHeight;
// meta->sar->satellite_binary_time;
// meta->sar->satellite_clock_time;
for (ii=0; ii<=proc->doppler[0].polynomialDegree; ii++)
meta->sar->range_doppler_coefficients[ii] =
proc->doppler[0].coefficient[ii];
meta->sar->azimuth_doppler_coefficients[0] = proc->doppler[0].coefficient[0];
// meta->sar->chirp_rate
// meta->sar->pulse_duration
meta->sar->range_sampling_rate = spec->commonRSF;
if (info->polarizationMode == SINGLE_POL)
strcpy(meta->sar->polarization, "SINGLE");
else if (info->polarizationMode == DUAL_POL)
strcpy(meta->sar->polarization, "DUAL");
else if (info->polarizationMode == QUAD_POL)
strcpy(meta->sar->polarization, "QUAD");
meta->sar->multilook = proc->multiLookedFlag;
meta->sar->pitch = info->pitch;
meta->sar->roll = info->roll;
meta->sar->yaw = info->yaw;
meta->sar->incid_a[0] = info->sceneCenterCoord.incidenceAngle;
meta->sar->heading_angle = info->headingAngle;
meta->sar->chirp_rate = proc->processingParameter[0].chirpRate;
meta->sar->pulse_duration = proc->processingParameter[0].pulseDuration;
// meta->projection
// meta->transform
// meta->airsar
// meta->uavsar
// meta->statistics
int numVectors = platform->numStateVectors;
meta->state_vectors = meta_state_vectors_init(numVectors);
meta->state_vectors->vector_count = numVectors;
ymd_date ymdStart, ymdSV;
julian_date jd;
hms_time hmsStart, hmsSV;
ymdStart.year = info->startTimeUTC.year;
ymdStart.month = info->startTimeUTC.month;
ymdStart.day = info->startTimeUTC.day;
hmsStart.hour = info->startTimeUTC.hour;
hmsStart.min = info->startTimeUTC.min;
hmsStart.sec = info->startTimeUTC.second;
meta->state_vectors->year = info->startTimeUTC.year;
date_ymd2jd(&ymdStart, &jd);
meta->state_vectors->julDay = jd.jd;
meta->state_vectors->second = date_hms2sec(&hmsStart);
for (ii=0; ii<numVectors; ii++) {
ymdSV.year = platform->stateVec[ii].timeUTC.year;
ymdSV.month = platform->stateVec[ii].timeUTC.month;
ymdSV.day = platform->stateVec[ii].timeUTC.day;
hmsSV.hour = platform->stateVec[ii].timeUTC.hour;
hmsSV.min = platform->stateVec[ii].timeUTC.min;
hmsSV.sec = platform->stateVec[ii].timeUTC.second;
meta->state_vectors->vecs[ii].time =
time_difference(&ymdSV, &hmsSV, &ymdStart, &hmsStart);
meta->state_vectors->vecs[ii].vec.pos.x = platform->stateVec[ii].posX;
meta->state_vectors->vecs[ii].vec.pos.y = platform->stateVec[ii].posY;
meta->state_vectors->vecs[ii].vec.pos.z = platform->stateVec[ii].posZ;
meta->state_vectors->vecs[ii].vec.vel.x = platform->stateVec[ii].velX;
meta->state_vectors->vecs[ii].vec.vel.y = platform->stateVec[ii].velY;
meta->state_vectors->vecs[ii].vec.vel.z = platform->stateVec[ii].velZ;
}
if (meta->sar->azimuth_time_per_pixel > 0)
meta->sar->time_shift = 0.0;
else
meta->sar->time_shift = meta->state_vectors->vecs[numVectors-1].time;
if (meta->sar->yaw == 0 ||
!meta_is_valid_double(meta->sar->yaw))
{
meta->sar->yaw = meta_yaw(meta, meta->general->line_count/2.0,
meta->general->sample_count/2.0);
}
/*
// few calculations need state vectors
meta->sar->earth_radius =
meta_get_earth_radius(meta, line_count/2, sample_count/2);
// meta->sar->earth_radius_pp
meta->sar->satellite_height =
meta_get_sat_height(meta, meta->general->line_count/2,
meta->general->sample_count/2);
meta->sar->incid_a[0] = meta_incid(meta, line_count/2, sample_count/2)*R2D;
*/
// Location block
meta_get_corner_coords(meta);
/*
meta->location = meta_location_init();
for (ii=0; ii<4; ii++) {
if (info->sceneCornerCoord[ii].refRow == 0 &&
info->sceneCornerCoord[ii].refColumn == 0) {
meta->location->lat_start_near_range = info->sceneCornerCoord[ii].lat;
meta->location->lon_start_near_range = info->sceneCornerCoord[ii].lon;
}
else if (info->sceneCornerCoord[ii].refRow == 0 &&
info->sceneCornerCoord[ii].refColumn == sample_count) {
meta->location->lat_start_far_range = info->sceneCornerCoord[ii].lat;
meta->location->lon_start_far_range = info->sceneCornerCoord[ii].lon;
}
else if (info->sceneCornerCoord[ii].refRow == line_count &&
info->sceneCornerCoord[ii].refColumn == 0) {
meta->location->lat_end_near_range = info->sceneCornerCoord[ii].lat;
meta->location->lon_end_near_range = info->sceneCornerCoord[ii].lon;
}
else if (info->sceneCornerCoord[ii].refRow == line_count &&
info->sceneCornerCoord[ii].refColumn == sample_count) {
meta->location->lat_end_far_range = info->sceneCornerCoord[ii].lat;
meta->location->lon_end_far_range = info->sceneCornerCoord[ii].lon;
}
}
*/
return meta;
}
meta_parameters* airsar2meta(airsar_header *header,
airsar_param_header *params,
airsar_dem_header *dem)
{
meta_parameters *meta;
hms_time hms;
// Allocate memory for metadata structure
meta = raw_init();
// General block
sprintf(meta->general->basename, "%s", params->site_name);
sprintf(meta->general->sensor, "AIRSAR");
strcpy(meta->general->sensor_name, "SAR");
if (strlen(header->processor)>0) {
header->processor[4] = '\0';
strcpy(meta->general->processor, "JPL version ");
strcat(meta->general->processor, header->processor);
} else {
strcpy(meta->general->processor, MAGIC_UNSET_STRING);
}
// FIXME: various data types - InSAR vs. polarimetric
date_sec2hms(params->acquisition_seconds, &hms);
sprintf(meta->general->acquisition_date, "%s %d:%d:%.3lf",
params->acquisition_date, hms.hour, hms.min, hms.sec);
meta->general->orbit = params->cct_id; // close enough
// no frame number
// FIXME: decide how to separate interferometric/polarimetric data
meta->general->band_count = 1;
meta->general->line_count = header->line_count;
//header->line_count - header->first_data_offset / header->sample_count;
meta->general->sample_count = header->sample_count;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = header->x_pixel_size;
meta->general->y_pixel_size = header->y_pixel_size;
meta->general->center_latitude = params->center_lat;
meta->general->center_longitude = params->center_lon;
meta->general->re_major = 6378137.0; // WGS84
meta->general->re_minor = 6356752.314; // WGS84
// no information on bit error rate, missing lines and no data
// SAR block
meta->sar = meta_sar_init();
// The CCT type 'CM' stands for 'Compressed Stokes Matrix' which implies
// that you have fully polarimetric data
if (strncmp_case(params->cct_type, "CM", 2) == 0) {
meta->general->image_data_type = POLARIMETRIC_IMAGE;
meta->general->radiometry = r_SIGMA;
strcpy(meta->sar->polarization, "QUAD-POL");
meta->general->band_count = 8;
}
if (strncmp_case(header->range_projection, "GROUND", 6) == 0)
meta->sar->image_type = 'G';
// no information on look direction
if (params->deskewed == 1)
meta->sar->deskewed = 1;
else if (params->deskewed == 2)
meta->sar->deskewed = 0;
meta->sar->original_line_count = header->line_count;
meta->sar->original_sample_count = header->sample_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
// no information on azimuth and range time per pixel
// no information on slant and time shift
meta->sar->slant_range_first_pixel = params->near_slant_range;
meta->sar->wavelength = params->wavelength;
meta->sar->prf = params->prf;
// no information on earth radius and satellite height
// no time information
// no Doppler information
meta->sar->azimuth_processing_bandwidth = params->chirp_bandwidth;
// no chirp rate information
meta->sar->pulse_duration = params->pulse_length;
meta->sar->range_sampling_rate = params->range_sampling_rate;
// FIXME: check polarizations for interferometric/polarimetric data
// FIXME: multilook flag depends on data type
// AirSAR block
meta->airsar = meta_airsar_init();
meta->airsar->scale_factor = 1.0; // Bruce Chapman said so.
meta->airsar->gps_altitude = params->gps_altitude;
if (dem) {
meta->airsar->lat_peg_point = dem->lat_peg_point;
meta->airsar->lon_peg_point = dem->lon_peg_point;
meta->airsar->head_peg_point = dem->head_peg_point;
meta->airsar->along_track_offset = dem->along_track_offset;
meta->airsar->cross_track_offset = dem->cross_track_offset;
}
else {
meta->airsar->lat_peg_point = params->lat_peg_point;
meta->airsar->lon_peg_point = params->lon_peg_point;
meta->airsar->head_peg_point = params->head_peg_point;
meta->airsar->along_track_offset = params->along_track_offset;
meta->airsar->cross_track_offset = params->cross_track_offset;
}
// The DEM header of Rick's prime test data did not have a valid peg point.
// Without that the other numbers (along-track and cross-track offsets
// as well as corner coordinates) don't make sense.
// Will take the numbers out of the parameter header. Seems to work fine
// with the prime test data set. Extract only elevation offset and increment
// out of the DEM header
if (dem) {
meta->airsar->elevation_increment = dem->elevation_increment;
meta->airsar->elevation_offset = dem->elevation_offset;
}
// Location block
meta->location = meta_location_init();
if (dem) {
meta->location->lat_start_near_range = dem->corner1_lat;
meta->location->lon_start_near_range = dem->corner1_lon;
meta->location->lat_start_far_range = dem->corner2_lat;
meta->location->lon_start_far_range = dem->corner2_lon;
meta->location->lat_end_near_range = dem->corner4_lat;
meta->location->lon_end_near_range = dem->corner4_lon;
meta->location->lat_end_far_range = dem->corner3_lat;
meta->location->lon_end_far_range = dem->corner3_lon;
}
return meta;
}
meta_parameters* uavsar_polsar2meta(uavsar_polsar *params)
{
meta_parameters *meta;
// Allocate memory for metadata structure
meta = raw_init();
// General block
sprintf(meta->general->basename, "%s", params->site);
sprintf(meta->general->sensor, "UAVSAR");
strcpy(meta->general->sensor_name, "PolSAR");
strcpy(meta->general->processor, "JPL version ");
strcat(meta->general->processor, params->processor);
if (params->type == POLSAR_SLC) {
strcpy(meta->general->mode, "SLC");
meta->general->image_data_type = POLARIMETRIC_S2_MATRIX;
}
else if (params->type == POLSAR_MLC) {
strcpy(meta->general->mode, "MLC");
meta->general->image_data_type = POLARIMETRIC_C3_MATRIX;
}
else if (params->type == POLSAR_DAT) {
strcpy(meta->general->mode, "DAT");
meta->general->image_data_type = POLARIMETRIC_STOKES_MATRIX;
}
else if (params->type == POLSAR_GRD) {
strcpy(meta->general->mode, "GRD");
meta->general->image_data_type = POLARIMETRIC_C3_MATRIX;
meta->general->no_data = 0;
}
else if (params->type == POLSAR_HGT) {
strcpy(meta->general->mode, "HGT");
meta->general->image_data_type = DEM;
}
else
strcpy(meta->general->mode, "unknown");
meta->general->radiometry = r_GAMMA;
meta->general->data_type = REAL32;
strcpy(meta->general->acquisition_date, params->acquisition_date);
meta->general->band_count = 1;
meta->general->line_count = params->row_count;
meta->general->sample_count = params->column_count;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = params->range_pixel_spacing;
meta->general->y_pixel_size = fabs(params->azimuth_pixel_spacing);
meta->general->re_major = params->semi_major;
double re = params->semi_major;
double ecc2 = params->eccentricity;
double rp = sqrt((1-ecc2)*re*re);
meta->general->re_minor = rp;
// no information on bit error rate, missing lines and no data
// SAR block
meta->sar = meta_sar_init();
strcpy(meta->sar->polarization, "QUAD-POL");
if (strcmp_case(params->projection, "SCX") == 0)
meta->sar->image_type = 'S';
else if (strcmp_case(params->projection, "EQA") == 0)
meta->sar->image_type = 'P';
if (strcmp_case(params->look_direction, "Left") == 0)
meta->sar->look_direction = 'L';
else if (strcmp_case(params->look_direction, "Right") == 0)
meta->sar->look_direction = 'R';
if (params->type == POLSAR_SLC) {
meta->sar->azimuth_look_count = 1;
meta->sar->range_look_count = 1;
meta->sar->multilook = 0;
}
else {
// FIXME: Update once range look count is introduced to metadata structure
meta->sar->azimuth_look_count = params->azimuth_look_count;
meta->sar->range_look_count = params->range_look_count;
meta->sar->multilook = 1;
}
meta->sar->deskewed = 1;
meta->sar->original_line_count = params->row_count;
meta->sar->original_sample_count = params->column_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
// no information on azimuth and range time per pixel
meta->sar->time_shift = 0.0;
meta->sar->slant_shift = 0.0;
meta->sar->slant_range_first_pixel = params->slant_range_first_pixel * 1000.0;
meta->sar->wavelength = params->wavelength / 100.0;
// no information on pulse repetition frequency
double tan_lat = params->lat_peg_point*D2R;
meta->sar->earth_radius = rp*sqrt(1 + tan_lat*tan_lat) /
sqrt(rp*rp/(re*re) + tan_lat*tan_lat);
// no information on satellite height
// no time information
// no Doppler information
meta->sar->yaw = params->yaw;
meta->sar->pitch = params->pitch;
meta->sar->roll = params->roll;
meta->sar->azimuth_processing_bandwidth = params->bandwidth;
// no chirp rate information
meta->sar->pulse_duration = params->pulse_length / 1000.0;
// no information on range sampling rate
// FIXME: check polarizations for interferometric/polarimetric data
// FIXME: multilook flag depends on data type
// UAVSAR block
meta->uavsar = meta_uavsar_init();
strcpy(meta->uavsar->id, params->id);
meta->uavsar->scale_factor = 1.0;
meta->uavsar->gps_altitude = params->altitude;
meta->uavsar->lat_peg_point = params->lat_peg_point;
meta->uavsar->lon_peg_point = params->lon_peg_point;
meta->uavsar->head_peg_point = params->head_peg_point;
meta->uavsar->along_track_offset = params->along_track_offset;
meta->uavsar->cross_track_offset = params->cross_track_offset;
// Location block
meta->location = meta_location_init();
meta->location->lat_start_near_range = params->lat_upper_left;
meta->location->lon_start_near_range = params->lon_upper_left;
meta->location->lat_start_far_range = params->lat_upper_right;
meta->location->lon_start_far_range = params->lon_upper_right;
meta->location->lat_end_near_range = params->lat_lower_left;
meta->location->lon_end_near_range = params->lon_lower_left;
meta->location->lat_end_far_range = params->lat_lower_right;
meta->location->lon_end_far_range = params->lon_lower_right;
// Projection block
if (params->type == POLSAR_GRD || params->type == POLSAR_HGT) {
meta->projection = meta_projection_init();
meta->projection->type = LAT_LONG_PSEUDO_PROJECTION;
strcpy (meta->projection->units, "degrees");
if (params->along_track_offset >= 0.0)
meta->projection->hem = 'N';
else
meta->projection->hem = 'S';
meta->projection->re_major = meta->general->re_major;
meta->projection->re_minor = meta->general->re_minor;
meta->projection->height = 0.0;
meta->projection->spheroid = WGS84_SPHEROID;
meta->projection->datum = WGS84_DATUM;
// Coordinate reference: Point
// UAVSAR lat/lon projected data is calculated from center
// pixel. Thus we have to add in a half-pixel shift.
meta->projection->startX =
params->cross_track_offset - params->range_pixel_spacing / 2.0;
meta->projection->startY =
params->along_track_offset - params->azimuth_pixel_spacing / 2.0;
meta->projection->perX = params->range_pixel_spacing;
meta->projection->perY = params->azimuth_pixel_spacing;
meta->general->center_latitude = params->along_track_offset +
params->azimuth_pixel_spacing * params->row_count / 2.0;
meta->general->center_longitude = params->cross_track_offset +
params->range_pixel_spacing * params->column_count / 2.0;
}
else {
meta_get_latLon(meta, meta->general->line_count/2, meta->general->sample_count/2, 0,
&meta->general->center_latitude, &meta->general->center_longitude);
}
return meta;
}
meta_parameters* gamma_isp2meta(gamma_isp *gamma)
{
meta_parameters *meta;
char *mon[13]={"","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
"Oct","Nov","Dec"};
// Initialize the meta structure
meta = raw_init();
// Fill general block
strcpy(meta->general->basename, gamma->title);
strcpy(meta->general->sensor, gamma->sensor);
strcpy(meta->general->sensor_name, MAGIC_UNSET_STRING); // Sensor name not available in ISP metadata
strcpy(meta->general->mode, MAGIC_UNSET_STRING); // Mode not available in ISP metadata
strcpy(meta->general->processor, "GAMMA ISP");
if (strncmp_case(gamma->image_format, "FCOMPLEX", 8) == 0)
meta->general->data_type = COMPLEX_REAL32;
else if (strncmp_case(gamma->image_format, "SCOMPLEX", 8) == 0)
meta->general->data_type = COMPLEX_INTEGER16;
else if (strncmp_case(gamma->image_format, "FLOAT", 8) == 0)
meta->general->data_type = REAL32;
else if (strncmp_case(gamma->image_format, "SHORT", 8) == 0)
meta->general->data_type = INTEGER16;
else if (strncmp_case(gamma->image_format, "BYTE", 8) == 0)
meta->general->data_type = ASF_BYTE;
if (strcmp(gamma->image_data_type, "UNKNOWN") == 0) {
switch(meta->general->data_type)
{
case COMPLEX_REAL32:
case COMPLEX_INTEGER16:
meta->general->image_data_type = COMPLEX_IMAGE;
break;
default:
meta->general->image_data_type = IMAGE;
break;
}
}
else {
if (strncmp_case(gamma->image_data_type, "RAW_IMAGE", 9) == 0)
meta->general->image_data_type = RAW_IMAGE;
if (strncmp_case(gamma->image_data_type, "COMPLEX_IMAGE", 13) == 0)
meta->general->image_data_type = COMPLEX_IMAGE;
if (strncmp_case(gamma->image_data_type, "AMPLITUDE_IMAGE", 15) == 0)
meta->general->image_data_type = AMPLITUDE_IMAGE;
if (strncmp_case(gamma->image_data_type, "PHASE_IMAGE", 11) == 0)
meta->general->image_data_type = PHASE_IMAGE;
if (strncmp_case(gamma->image_data_type, "COHERENCE_IMAGE", 15) == 0)
meta->general->image_data_type = COHERENCE_IMAGE;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_IMAGE", 18) == 0)
meta->general->image_data_type = POLARIMETRIC_IMAGE;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_SEGMENTATION", 25) == 0)
meta->general->image_data_type = POLARIMETRIC_SEGMENTATION;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_DECOMPOSITION", 26) == 0)
meta->general->image_data_type = POLARIMETRIC_DECOMPOSITION;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_PARAMETER", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_PARAMETER;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_C2_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_C2_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_C3_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_C3_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_C4_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_C4_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_T3_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_T3_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_T4_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_T4_MATRIX;
if (strncmp_case(gamma->image_data_type,
"POLARIMETRIC_STOKES_MATRIX", 26) == 0)
meta->general->image_data_type = POLARIMETRIC_STOKES_MATRIX;
if (strncmp_case(gamma->image_data_type, "LUT_IMAGE", 9) == 0)
meta->general->image_data_type = LUT_IMAGE;
if (strncmp_case(gamma->image_data_type, "ELEVATION", 9) == 0)
meta->general->image_data_type = ELEVATION;
if (strncmp_case(gamma->image_data_type, "DEM", 3) == 0)
meta->general->image_data_type = DEM;
if (strncmp_case(gamma->image_data_type, "IMAGE", 5) == 0)
meta->general->image_data_type = IMAGE;
if (strncmp_case(gamma->image_data_type, "MASK", 4) == 0)
meta->general->image_data_type = MASK;
if (strncmp_case(gamma->image_data_type, "IMAGE_LAYER_STACK", 17) == 0)
meta->general->image_data_type = IMAGE_LAYER_STACK;
if (strncmp_case(gamma->image_data_type, "INSAR_STACK", 11) == 0)
meta->general->image_data_type = INSAR_STACK;
}
sprintf(meta->general->acquisition_date, "%2d-%s-%4d",
gamma->acquisition.day, mon[gamma->acquisition.month],
gamma->acquisition.year);
meta->general->orbit = gamma->orbit;
if (gamma->heading > 90.0 && gamma->heading < 270.0)
meta->general->orbit_direction = 'D';
else
meta->general->orbit_direction = 'A';
meta->general->frame = MAGIC_UNSET_INT;
meta->general->band_count = 1;
strcpy(meta->general->bands, MAGIC_UNSET_STRING);
meta->general->line_count = gamma->azimuth_lines;
meta->general->sample_count = gamma->range_samples;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = gamma->range_pixel_spacing;
meta->general->y_pixel_size = gamma->azimuth_pixel_spacing;
meta->general->center_latitude = gamma->center_latitude;
meta->general->center_longitude = gamma->center_longitude;
meta->general->re_major = gamma->earth_semi_major_axis;
meta->general->re_minor = gamma->earth_semi_minor_axis;
meta->general->bit_error_rate = MAGIC_UNSET_DOUBLE;
meta->general->missing_lines = 0;
meta->general->no_data = MAGIC_UNSET_DOUBLE;
// Fill SAR block
meta->sar = meta_sar_init();
if (strncmp(uc(gamma->image_geometry), "SLANT_RANGE", 11) == 0)
meta->sar->image_type = 'S';
else if (strncmp(uc(gamma->image_geometry), "GROUND_RANGE", 11) == 0)
meta->sar->image_type = 'G';
else
meta->sar->image_type = MAGIC_UNSET_CHAR;
if (gamma->azimuth_angle >= 0.0)
meta->sar->look_direction = 'R';
else
meta->sar->look_direction = 'L';
meta->sar->azimuth_look_count = gamma->azimuth_looks;
meta->sar->range_look_count = gamma->range_looks;
if (gamma->azimuth_looks > 1 || gamma->range_looks > 1)
meta->sar->multilook = 1;
else
meta->sar->multilook = 0;
meta->sar->deskewed = gamma->azimuth_deskew;
meta->sar->original_line_count = meta->general->line_count;
meta->sar->original_sample_count = meta->general->sample_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
meta->sar->range_time_per_pixel = fabs((2.0 * gamma->range_pixel_spacing) /
gamma->range_looks /
SPD_LIGHT);
meta->sar->azimuth_time_per_pixel = gamma->azimuth_line_time;
meta->sar->slant_range_first_pixel = gamma->near_range_slc;
meta->sar->slant_shift = 0.0;
meta->sar->time_shift = 0.0;
/* Under testing - does not seem to apply to the test data set.
if (meta->general->orbit_direction == 'D')
meta->sar->time_shift = 0.0;
else if (meta->general->orbit_direction == 'A')
meta->sar->time_shift = fabs(meta->sar->original_line_count * meta->sar->azimuth_time_per_pixel);
else
meta->sar->time_shift = MAGIC_UNSET_DOUBLE;
*/
meta->sar->wavelength = SPD_LIGHT / gamma->radar_frequency;
meta->sar->prf = gamma->prf;
meta->sar->earth_radius = gamma->earth_radius_below_sensor;
meta->sar->earth_radius_pp = meta->sar->earth_radius; // KLUDGE: This value is actually unknown in ISP metadata
meta->sar->satellite_height = gamma->sar_to_earth_center;
strcpy(meta->sar->satellite_binary_time, MAGIC_UNSET_STRING);
strcpy(meta->sar->satellite_clock_time, MAGIC_UNSET_STRING);
int i;
if (gamma->doppler_polynomial[3] > 0.0001) {
// FIXME: If this error ever fires, then we should insert a function that does a
// quadratic fit to the cubic function. Then we can derive close 'nuf quadratic
// values from a set of points generated by the cubic and use those.
asfPrintError("GAMMA doppler polynomial has a large cubic term\n"
"(%f versus limit of 0.0001) and is not well modeled by a\nquadratic.",
gamma->doppler_polynomial[3]);
}
for (i=0; i<3; i++) {
meta->sar->range_doppler_coefficients[i] = gamma->doppler_polynomial[i];
meta->sar->azimuth_doppler_coefficients[i] = 0.0;
}
// Adjust for difference in units [Hz/m] -> [Hz/pixel]
meta->sar->range_doppler_coefficients[1] /= gamma->range_pixel_spacing;
meta->sar->range_doppler_coefficients[2] /=
gamma->range_pixel_spacing * gamma->range_pixel_spacing;
meta->sar->azimuth_doppler_coefficients[0] = gamma->doppler_polynomial[0];
meta->sar->azimuth_processing_bandwidth = gamma->azimuth_proc_bandwidth;
meta->sar->chirp_rate = gamma->chirp_bandwidth;
meta->sar->pulse_duration = MAGIC_UNSET_DOUBLE;
meta->sar->range_sampling_rate = gamma->adc_sampling_rate;
strcpy(meta->sar->polarization, MAGIC_UNSET_STRING);
// Fill state vector structure
meta->state_vectors = meta_state_vectors_init(3);
meta->state_vectors = gamma->stVec;
// Propagate the state vectors to start, center, end
int vector_count = 3;
double data_int = gamma->center_time - gamma->start_time;
while (fabs(data_int) > 15.0) {
data_int /= 2;
vector_count = vector_count*2-1;
}
propagate_state(meta, vector_count, data_int);
// Generate location block
meta_get_corner_coords(meta);
return meta;
}
meta_parameters* gamma_msp2meta(gamma_msp *gamma)
{
meta_parameters *meta;
char *mon[13]={"","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
"Oct","Nov","Dec"};
// Initialize the meta structure
meta = raw_init();
// Fill general block
strcpy(meta->general->basename, gamma->title);
strcpy(meta->general->sensor, MAGIC_UNSET_STRING); // Sensor not available in MSP metadata
strcpy(meta->general->sensor_name, MAGIC_UNSET_STRING); // Sensor name not available in MSP metadata
strcpy(meta->general->mode, MAGIC_UNSET_STRING); // Mode not available in MSP metadata
strcpy(meta->general->processor, "GAMMA MSP");
if (strncmp(uc(gamma->image_format), "FCOMPLEX", 8) == 0)
meta->general->data_type = COMPLEX_REAL32;
else if (strncmp(uc(gamma->image_format), "SCOMPLEX", 8) == 0)
meta->general->data_type = COMPLEX_INTEGER16;
else if (strncmp(uc(gamma->image_format), "FLOAT", 8) == 0)
meta->general->data_type = REAL32;
else if (strncmp(uc(gamma->image_format), "SHORT", 8) == 0)
meta->general->data_type = INTEGER16;
else if (strncmp(uc(gamma->image_format), "BYTE", 8) == 0)
meta->general->data_type = ASF_BYTE;
if (strcmp(gamma->image_data_type, "UNKNOWN") == 0) {
switch(meta->general->data_type)
{
case COMPLEX_REAL32:
case COMPLEX_INTEGER16:
meta->general->image_data_type = COMPLEX_IMAGE;
break;
default:
meta->general->image_data_type = IMAGE;
break;
}
}
else {
if (strncmp(uc(gamma->image_data_type), "RAW_IMAGE", 9) == 0)
meta->general->image_data_type = RAW_IMAGE;
if (strncmp(uc(gamma->image_data_type), "COMPLEX_IMAGE", 13) == 0)
meta->general->image_data_type = COMPLEX_IMAGE;
if (strncmp(uc(gamma->image_data_type), "AMPLITUDE_IMAGE", 15) == 0)
meta->general->image_data_type = AMPLITUDE_IMAGE;
if (strncmp(uc(gamma->image_data_type), "PHASE_IMAGE", 11) == 0)
meta->general->image_data_type = PHASE_IMAGE;
if (strncmp(uc(gamma->image_data_type), "COHERENCE_IMAGE", 15) == 0)
meta->general->image_data_type = COHERENCE_IMAGE;
if (strncmp(uc(gamma->image_data_type), "POLARIMETRIC_IMAGE", 18) == 0)
meta->general->image_data_type = POLARIMETRIC_IMAGE;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_SEGMENTATION", 25) == 0)
meta->general->image_data_type = POLARIMETRIC_SEGMENTATION;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_DECOMPOSITION", 26) == 0)
meta->general->image_data_type = POLARIMETRIC_DECOMPOSITION;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_PARAMETER", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_PARAMETER;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_C2_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_C2_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_C3_MATRIX", 22) == 0)
meta->general->image_data_type = POLARIMETRIC_C3_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_C4_MATRIX", 19) == 0)
meta->general->image_data_type = POLARIMETRIC_C4_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_T3_MATRIX", 19) == 0)
meta->general->image_data_type = POLARIMETRIC_T3_MATRIX;
if (strncmp_case(gamma->image_data_type, "POLARIMETRIC_T4_MATRIX", 19) == 0)
meta->general->image_data_type = POLARIMETRIC_T4_MATRIX;
if (strncmp_case(gamma->image_data_type,
"POLARIMETRIC_STOKES_MATRIX", 26) == 0)
meta->general->image_data_type = POLARIMETRIC_STOKES_MATRIX;
if (strncmp(uc(gamma->image_data_type), "LUT_IMAGE", 9) == 0)
meta->general->image_data_type = LUT_IMAGE;
if (strncmp(uc(gamma->image_data_type), "ELEVATION", 9) == 0)
meta->general->image_data_type = ELEVATION;
if (strncmp(uc(gamma->image_data_type), "DEM", 3) == 0)
meta->general->image_data_type = DEM;
if (strncmp(uc(gamma->image_data_type), "IMAGE", 5) == 0)
meta->general->image_data_type = IMAGE;
if (strncmp(uc(gamma->image_data_type), "MASK", 4) == 0)
meta->general->image_data_type = MASK;
}
sprintf(meta->general->acquisition_date, "%2d-%s-%4d",
gamma->acquisition.day, mon[gamma->acquisition.month],
gamma->acquisition.year);
meta->general->orbit = gamma->orbit;
if (gamma->track_angle < -90.0)
meta->general->orbit_direction = 'D';
else
meta->general->orbit_direction = 'A';
meta->general->frame = MAGIC_UNSET_INT;
meta->general->band_count = 1;
strcpy(meta->general->bands, gamma->band);
meta->general->line_count = gamma->azimuth_pixels;
meta->general->sample_count = gamma->range_pixels;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = gamma->range_pixel_spacing;
meta->general->y_pixel_size = gamma->azimuth_pixel_spacing;
meta->general->center_latitude = gamma->scene_center_latitude;
meta->general->center_longitude = gamma->scene_center_longitude;
meta->general->re_major = gamma->earth_semi_major_axis;
meta->general->re_minor = gamma->earth_semi_minor_axis;
meta->general->bit_error_rate = MAGIC_UNSET_DOUBLE;
meta->general->missing_lines = 0;
meta->general->no_data = MAGIC_UNSET_DOUBLE;
// Fill SAR block
meta->sar = meta_sar_init();
meta->sar->image_type = MAGIC_UNSET_CHAR;
meta->sar->look_direction = MAGIC_UNSET_CHAR;
meta->sar->azimuth_look_count = gamma->azimuth_looks;
meta->sar->range_look_count = gamma->range_looks;
meta->sar->deskewed = gamma->azimuth_deskew;
meta->sar->original_line_count = gamma->offset_to_first_echo_to_process + gamma->echoes_to_process;
meta->sar->original_sample_count = gamma->range_offset + gamma->raw_range_samples;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
meta->sar->range_time_per_pixel = fabs((2.0 * gamma->range_pixel_spacing) / SPD_LIGHT);
meta->sar->azimuth_time_per_pixel = get_gamma_msp_azimuth_time_per_pixel(gamma);
meta->sar->slant_range_first_pixel = gamma->near_range_slc;
meta->sar->slant_shift = 0.0;
if (meta->general->orbit_direction == 'D')
meta->sar->time_shift = 0.0;
else if (meta->general->orbit_direction == 'A')
meta->sar->time_shift = fabs(meta->sar->original_line_count * meta->sar->azimuth_time_per_pixel);
else
meta->sar->time_shift = MAGIC_UNSET_DOUBLE;
meta->sar->wavelength = MAGIC_UNSET_DOUBLE;
meta->sar->prf = gamma->prf;
meta->sar->earth_radius = get_gamma_msp_earth_radius_below_sensor(gamma);
meta->sar->earth_radius_pp = meta->sar->earth_radius; // KLUDGE: This value is actually unknown in MSP metadata
meta->sar->satellite_height = sqrt(gamma->sensor_position_vector.x*gamma->sensor_position_vector.x +
gamma->sensor_position_vector.y*gamma->sensor_position_vector.y +
gamma->sensor_position_vector.z*gamma->sensor_position_vector.z);
strcpy(meta->sar->satellite_binary_time, MAGIC_UNSET_STRING);
strcpy(meta->sar->satellite_clock_time, MAGIC_UNSET_STRING);
int i;
if (gamma->doppler_polynomial[3] > 0.0001) {
// FIXME: If this error ever fires, then we should insert a function that does a
// quadratic fit to the cubic function. Then we can derive close 'nuf quadratic
// values from a set of points generated by the cubic and use those.
asfPrintError("GAMMA doppler polynomial has a large cubic term\n"
"(%f versus limit of 0.0001) and is not well modeled by a\nquadratic.",
gamma->doppler_polynomial[3]);
}
for (i=0; i<3; i++) {
meta->sar->range_doppler_coefficients[i] = gamma->doppler_polynomial[i];
meta->sar->azimuth_doppler_coefficients[i] = 0.0; // FIXME: We have gamma->radar_frequency and state vectors ...we should estimate the azimuth doppler stuff
}
meta->sar->azimuth_processing_bandwidth = MAGIC_UNSET_DOUBLE;
meta->sar->chirp_rate = MAGIC_UNSET_DOUBLE;
meta->sar->pulse_duration = MAGIC_UNSET_DOUBLE;
meta->sar->range_sampling_rate = MAGIC_UNSET_DOUBLE;
strcpy(meta->sar->polarization, MAGIC_UNSET_STRING);
meta->sar->multilook = 0;
// Fill state vector structure
meta->state_vectors = meta_state_vectors_init(3);
meta->state_vectors = gamma->stVec;
// Fill location block
meta->location = meta_location_init();
if (meta->general->orbit_direction == 'D') {
// See comments in gamma.h for map coordinate identification
meta->location->lat_start_near_range = gamma->map_coordinate_2.lat;
meta->location->lon_start_near_range = gamma->map_coordinate_2.lon;
meta->location->lat_start_far_range = gamma->map_coordinate_1.lat;
meta->location->lon_start_far_range = gamma->map_coordinate_1.lon;
meta->location->lat_end_near_range = gamma->map_coordinate_4.lat;
meta->location->lon_end_near_range = gamma->map_coordinate_4.lon;
meta->location->lat_end_far_range = gamma->map_coordinate_3.lat;
meta->location->lon_end_far_range = gamma->map_coordinate_3.lon;
}
else {
meta->location->lat_start_near_range = gamma->map_coordinate_3.lat;
meta->location->lon_start_near_range = gamma->map_coordinate_3.lon;
meta->location->lat_start_far_range = gamma->map_coordinate_4.lat;
meta->location->lon_start_far_range = gamma->map_coordinate_4.lon;
meta->location->lat_end_near_range = gamma->map_coordinate_1.lat;
meta->location->lon_end_near_range = gamma->map_coordinate_1.lon;
meta->location->lat_end_far_range = gamma->map_coordinate_2.lat;
meta->location->lon_end_far_range = gamma->map_coordinate_2.lon;
}
return meta;
}
meta_parameters* vp2meta(vexcel_plain *vp)
{
vp_doppler_centroid_parameters doppler_params;
meta_parameters *meta;
char *mon[13]={"","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
"Oct","Nov","Dec"};
ymd_date ymd, ref_date;
hms_time time, ref_time;
julian_date jd;
int i, nStVec;
// Initialize the meta structure
meta = raw_init();
// Fill general block
strcpy(meta->general->basename, vp->gli_product.image_desc.title);
strcpy(meta->general->sensor, vp->sensor.instrument_name);
strcpy(meta->general->sensor_name, vp->sensor.sensor_name);
// FIXME: need to handle multibeam data
strcpy(meta->general->mode, vp->sensor.beam[0].beam_name);
strcpy(meta->general->processor, vp->gli_product.processor_name);
if (vp->gli_product.image_desc.bytes_per_pixel == 1)
meta->general->data_type = ASF_BYTE;
else if (vp->gli_product.image_desc.bytes_per_pixel == 2)
meta->general->data_type = INTEGER16;
else if (vp->gli_product.image_desc.bytes_per_pixel == 4)
meta->general->data_type = REAL32;
meta->general->image_data_type = AMPLITUDE_IMAGE;
meta->general->radiometry = r_AMP;
date_dssr2date(vp->gli_product.orbit_nr_date, &ymd, &time);
sprintf(meta->general->acquisition_date, "%2d-%s-%4d",
ymd.day, mon[ymd.month], ymd.year);
meta->general->orbit = vp->gli_product.orbit_nr;
if (strncmp(vp->flight_path_direction, "ASCENDING", 9) == 0)
meta->general->orbit_direction = 'A';
else
meta->general->orbit_direction = 'D';
meta->general->frame = MAGIC_UNSET_INT;
meta->general->band_count = vp->sensor.nr_beams;
strcpy(meta->general->bands, "AMP");
meta->general->line_count = vp->gli_product.image_desc.nr_lines;;
meta->general->sample_count = vp->gli_product.image_desc.nr_pixels;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->x_pixel_size = vp->gli_product.image_desc.line_spacing;
meta->general->y_pixel_size = vp->gli_product.image_desc.pixel_spacing;
meta->general->center_latitude =
vp->gli_product.image_desc.coord.center_line_center_pixel.lat;
meta->general->center_longitude =
vp->gli_product.image_desc.coord.center_line_center_pixel.lon;;
meta->general->re_major =
vp->gli_product.image_desc.coord.earth_model.major;
meta->general->re_minor =
vp->gli_product.image_desc.coord.earth_model.minor;
meta->general->bit_error_rate = MAGIC_UNSET_DOUBLE;
meta->general->missing_lines = 0;
meta->general->no_data = MAGIC_UNSET_DOUBLE;
// Fill SAR block
meta->sar = meta_sar_init();
// working with assumptions here
meta->sar->image_type = 'G';
if (vp->sensor.clock_angle >= 0.0)
meta->sar->look_direction = 'R';
else
meta->sar->look_direction = 'L';
meta->sar->azimuth_look_count = vp->gli_product.azimuth_looks;
meta->sar->range_look_count = vp->gli_product.range_looks;
meta->sar->deskewed = vp->gli_product.skew_flag;
meta->sar->original_line_count = meta->general->line_count;
meta->sar->original_sample_count = meta->general->sample_count;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
meta->sar->range_time_per_pixel =
fabs((2.0 * vp->gli_product.image_desc.pixel_spacing) / SPD_LIGHT);
meta->sar->azimuth_time_per_pixel = vp->gli_product.time_per_line;
meta->sar->slant_range_first_pixel = vp->gli_product.near_range;
meta->sar->slant_shift = 0.0;
if (meta->general->orbit_direction == 'D')
meta->sar->time_shift = 0.0;
else if (meta->general->orbit_direction == 'A')
meta->sar->time_shift =
fabs(meta->sar->original_line_count * meta->sar->azimuth_time_per_pixel);
else
meta->sar->time_shift = MAGIC_UNSET_DOUBLE;
meta->sar->wavelength = SPD_LIGHT / vp->sensor.beam[0].carrier_freq;
meta->sar->prf = vp->sensor.beam[0].prf;
meta->sar->earth_radius_pp = MAGIC_UNSET_DOUBLE;
strcpy(meta->sar->satellite_binary_time, MAGIC_UNSET_STRING);
strcpy(meta->sar->satellite_clock_time, MAGIC_UNSET_STRING);
doppler_params = vp->sensor.beam[0].doppler_centroid_parameters;
// FIXME: Check units for higher coefficients
meta->sar->range_doppler_coefficients[0] =
doppler_params.doppler_centroid_coefficients.a[0];
meta->sar->range_doppler_coefficients[1] =
doppler_params.doppler_centroid_coefficients.a[1];
meta->sar->range_doppler_coefficients[2] =
doppler_params.doppler_centroid_coefficients.a[2];
for (i=0; i<3; i++)
meta->sar->azimuth_doppler_coefficients[i] = 0.0;
meta->sar->azimuth_processing_bandwidth =
vp->gli_product.processor_bandwidth;
meta->sar->chirp_rate = vp->sensor.beam[0].chirp_rate;
meta->sar->pulse_duration = vp->sensor.beam[0].pulse_length;
meta->sar->range_sampling_rate = vp->sensor.beam[0].sampling_freq;
strcpy(meta->sar->polarization,
vp->sensor.beam[0].polarization_block.polarization[0].polarization);
meta->sar->multilook = 1;
meta->sar->pitch = vp->sensor.ephemeris.attitude.pitch;
meta->sar->roll = vp->sensor.ephemeris.attitude.roll;
meta->sar->yaw = vp->sensor.ephemeris.attitude.yaw;
// Fill state vector structure
nStVec = vp->sensor.ephemeris.sv_block.nr_sv;
meta->state_vectors = meta_state_vectors_init(nStVec);
date_dssr2date(vp->sensor.ephemeris.sv_block.state_vector[0].date,
&ref_date, &ref_time);
meta->state_vectors->year = ref_date.year;
date_ymd2jd(&ref_date, &jd);
meta->state_vectors->julDay = jd.jd;
meta->state_vectors->second = date_hms2sec(&ref_time);
meta->state_vectors->vector_count = nStVec;
for (i=0; i<nStVec; i++) {
date_dssr2date(vp->sensor.ephemeris.sv_block.state_vector[i].date,
&ymd, &time);
meta->state_vectors->vecs[i].time =
date_difference(&ref_date, &ref_time, &ymd, &time);
meta->state_vectors->vecs[i].vec.pos.x =
vp->sensor.ephemeris.sv_block.state_vector[i].x;
meta->state_vectors->vecs[i].vec.pos.y =
vp->sensor.ephemeris.sv_block.state_vector[i].y;
meta->state_vectors->vecs[i].vec.pos.z =
vp->sensor.ephemeris.sv_block.state_vector[i].z;
meta->state_vectors->vecs[i].vec.vel.x =
vp->sensor.ephemeris.sv_block.state_vector[i].xv;
meta->state_vectors->vecs[i].vec.vel.y =
vp->sensor.ephemeris.sv_block.state_vector[i].yv;
meta->state_vectors->vecs[i].vec.vel.z =
vp->sensor.ephemeris.sv_block.state_vector[i].zv;
}
date_dssr2date(vp->gli_product.first_line, &ymd, &time);
double shift = date_difference(&ref_date, &ref_time, &ymd, &time);
int sign;
if (compare_time(&ymd, &time, &ref_date, &ref_time) > 0)
sign = -1;
else
sign = 1;
for (i=0; i<nStVec; i++)
meta->state_vectors->vecs[i].time += sign * shift;
meta->state_vectors->second = date_hms2sec(&time);
double interval =
meta->general->line_count * meta->sar->azimuth_time_per_pixel / 2;
propagate_state(meta, 3, interval);
meta->sar->earth_radius =
meta_get_earth_radius(meta, meta->general->line_count/2,
meta->general->sample_count/2);
meta->sar->satellite_height =
meta_get_sat_height(meta, meta->general->line_count/2,
meta->general->sample_count/2);
// Fill location block
meta->location = meta_location_init();
meta->location->lat_start_near_range =
vp->gli_product.image_desc.coord.first_line_first_pixel.lat;
meta->location->lon_start_near_range =
vp->gli_product.image_desc.coord.first_line_first_pixel.lon;
meta->location->lat_start_far_range =
vp->gli_product.image_desc.coord.first_line_last_pixel.lat;
meta->location->lon_start_far_range =
vp->gli_product.image_desc.coord.first_line_last_pixel.lon;
meta->location->lat_end_near_range =
vp->gli_product.image_desc.coord.last_line_first_pixel.lat;
meta->location->lon_end_near_range =
vp->gli_product.image_desc.coord.last_line_first_pixel.lon;
meta->location->lat_end_far_range =
vp->gli_product.image_desc.coord.last_line_last_pixel.lat;
meta->location->lon_end_far_range =
vp->gli_product.image_desc.coord.last_line_last_pixel.lon;
return meta;
}
static int
proj_to_sr(const char *infile, const char *outfile, double pixel_size)
{
int ii, jj, kk;
const float_image_sample_method_t sampling_method =
FLOAT_IMAGE_SAMPLE_METHOD_BILINEAR;
// overall algorithm:
// 1. find extents in time/slant space
// 2. for each pixel in output, resample in input space
meta_parameters *inMeta = meta_read(infile);
int nl = inMeta->general->line_count;
int ns = inMeta->general->sample_count;
if (!inMeta->projection && !inMeta->transform)
asfPrintError("Expected a projection/transform block!\n");
if (!inMeta->state_vectors)
asfPrintError("Input data does not have state vectors!\n");
//asfPrintStatus("Converting %s to slant range...\n", infile);
// first, find extents in time/slant space
// do this by projecting image corners to time/slant
int tl_x=0, tl_y=0;
int tr_x=ns-1, tr_y=0;
int bl_x=0, bl_y=nl-1;
int br_x=ns-1, br_y=nl-1;
// we have to find the "real" corners of the image
// do this using the first band of the input image as a reference
if (inMeta->general->band_count == 1)
asfPrintStatus("Tiling the input image...\n");
else
asfPrintStatus("Tiling the reference band of the input image...\n");
FloatImage *in = float_image_new_from_metadata(inMeta, infile);
// find top left pixel -- TOP-most non-no-data pixel in the image
for (ii=0; ii<nl; ++ii)
for (jj=0; jj<ns; ++jj) {
double val = float_image_get_pixel(in, jj, ii);
if (val != inMeta->general->no_data && val != 0.0) {
tl_x = jj; tl_y = ii;
goto found_tl;
}
}
asfPrintError("Couldn't find top-left pixel! Entire image no data?\n");
found_tl:
// find top right pixel -- RIGHT-most non-no-data pixel in the image
for (jj=ns-1; jj>=0; --jj)
for (ii=0; ii<nl; ++ii) {
double val = float_image_get_pixel(in, jj, ii);
if (val != inMeta->general->no_data && val != 0.0) {
tr_x = jj; tr_y = ii;
goto found_tr;
}
}
asfPrintError("Couldn't find top-right pixel! Entire image no data?\n");
found_tr:
// find bottom left pixel -- LEFT-most non-no-data pixel in the image
for (jj=0; jj<ns; ++jj)
for (ii=nl-1; ii>=0; --ii) {
double val = float_image_get_pixel(in, jj, ii);
if (val != inMeta->general->no_data && val != 0.0) {
bl_x = jj; bl_y = ii;
goto found_bl;
}
}
asfPrintError("Couldn't find bottom-left pixel! Entire image no data?\n");
found_bl:
// find bottom right pixel -- BOTTOM-most non-no-data pixel in the image
for (ii=nl-1; ii>=0; --ii)
for (jj=ns-1; jj>=0; --jj) {
double val = float_image_get_pixel(in, jj, ii);
if (val != inMeta->general->no_data && val != 0.0) {
br_x = jj; br_y = ii;
goto found_br;
}
}
asfPrintError("Couldn't find bottom-right pixel! Entire image no data?\n");
found_br:
asfPrintStatus("Determining image extents in time/slant coordinates.\n");
//asfPrintStatus("Corners are at: TL (%d,%d)\n", tl_y, tl_x);
//asfPrintStatus(" (line,sample) TR (%d,%d)\n", tr_y, tr_x);
//asfPrintStatus(" BL (%d,%d)\n", bl_y, bl_x);
//asfPrintStatus(" BR (%d,%d)\n", br_y, br_x);
double tl_time, tl_slant;
double tr_time, tr_slant;
double bl_time, bl_slant;
double br_time, br_slant;
meta_get_timeSlantDop(inMeta, tl_y, tl_x, &tl_time, &tl_slant, NULL);
meta_get_timeSlantDop(inMeta, tr_y, tr_x, &tr_time, &tr_slant, NULL);
meta_get_timeSlantDop(inMeta, bl_y, bl_x, &bl_time, &bl_slant, NULL);
meta_get_timeSlantDop(inMeta, br_y, br_x, &br_time, &br_slant, NULL);
//asfPrintStatus("Corners are at: TL (%f,%f)\n", tl_time, tl_slant);
//asfPrintStatus(" (time,slant) TR (%f,%f)\n", tr_time, tr_slant);
//asfPrintStatus(" BL (%f,%f)\n", bl_time, bl_slant);
//asfPrintStatus(" BR (%f,%f)\n", br_time, br_slant);
double slant_start = min4(tl_slant, tr_slant, bl_slant, br_slant);
double slant_end = max4(tl_slant, tr_slant, bl_slant, br_slant);
double time_min = min4(tl_time, tr_time, bl_time, br_time);
double time_max = max4(tl_time, tr_time, bl_time, br_time);
double slant_incr;
double time_start, time_end, time_incr;
int onl, ons;
if (pixel_size > 0) {
slant_incr = pixel_size;
ons = (slant_end - slant_start) / slant_incr;
if (inMeta->sar) {
// in this case, the original data has a SAR block, we will use the
// same azimuth time per pixel.
time_incr = inMeta->sar->azimuth_time_per_pixel;
// we always want to be DECREASING in time
// latest time is on top (line 1), earliest on bottom (line ONL)
if (time_incr > 0) {
time_incr = -time_incr;
inMeta->sar->azimuth_time_per_pixel =
-inMeta->sar->azimuth_time_per_pixel;
}
time_start = time_max;
time_end = time_min;
onl = (time_end - time_start) / time_incr;
}
else {
// here, no sar block in the original data, just make a square
// image with decreasing time
onl = ons;
time_incr = (time_min - time_max) / (double)onl;
time_start = time_max;
time_end = time_min;
}
}
else {
// not provided a slant range pixel size, we'll figure something out
if (inMeta->sar) {
// use the same azimuth time per pixel.
time_incr = inMeta->sar->azimuth_time_per_pixel;
// we always want to be DECREASING in time
// latest time is on top (line 1), earliest on bottom (line ONL)
if (time_incr > 0) {
time_incr = -time_incr;
inMeta->sar->azimuth_time_per_pixel =
-inMeta->sar->azimuth_time_per_pixel;
}
time_start = time_max;
time_end = time_min;
onl = (time_end - time_start) / time_incr;
}
else {
// no info... determine azimuth time per pixel by keeping
// the height the same as in the original image
onl = nl;
time_incr = (time_min - time_max) / (double)onl;
time_start = time_max;
time_end = time_min;
}
// make it square, to get the slant range pixel size
ons = onl;
pixel_size = slant_incr = (slant_end - slant_start) / (double)ons;
}
asfRequire(onl > 0, "Internal Error: Invalid output line count: %d\n", onl);
asfRequire(ons > 0, "Internal Error: Invalid output sample count: %d\n", ons);
asfPrintStatus(" Slant range values: %f -> %f\n", slant_start, slant_end);
asfPrintStatus(" Slant range pixel size: %f\n", pixel_size);
asfPrintStatus(" Time values: %f -> %f\n", time_start, time_end);
asfPrintStatus(" Output Image will be %5d x %5d LxS\n", onl, ons);
asfPrintStatus(" (Input Image was %5d x %5d LxS)\n", nl, ns);
// generate a grid over the image, to generate our splines
// this grid size seems to work pretty well...
int n = 120;
asfPrintStatus("Creating %dx%d mapping grid...\n", n, n);
// changed how these are calculated, so that the spline will cover
// the entire value range
double time_grid_incr = fabs(time_end - time_start) / (double)(n-1);
if (time_incr < 0) time_grid_incr = -time_grid_incr;
double slant_grid_incr = fabs(slant_end - slant_start) / (double)(n-1);
if (slant_incr < 0) slant_grid_incr = -slant_grid_incr;
// allocating memory for the splines, and the arrays to generate them
gsl_interp_accel **samp_accels = MALLOC(sizeof(gsl_interp_accel *) * n);
gsl_spline **samp_splines = MALLOC(sizeof(gsl_spline *) * n);
gsl_interp_accel **line_accels = MALLOC(sizeof(gsl_interp_accel *) * n);
gsl_spline **line_splines = MALLOC(sizeof(gsl_spline *) * n);
double *slant_in = MALLOC(sizeof(double)*n);
double *line_out = MALLOC(sizeof(double)*n);
double *samp_out = MALLOC(sizeof(double)*n);
// an alias -- use the same array (to save memory -- these are not used
// at the same time), but create an alias for it, so it is not so confusing
double *time_in = slant_in;
//double max_err = 0;
// set up the vertical splines
for (jj=0; jj<n; ++jj) {
double slant = slant_start + jj*slant_grid_incr;
for (ii=0; ii<n; ++ii) {
// splines need strictly increasing range variables
if (time_grid_incr > 0)
time_in[ii] = time_start + ii*time_grid_incr;
else
time_in[ii] = time_end - ii*time_grid_incr;
ts2ls(inMeta, time_in[ii], slant, &line_out[ii], &samp_out[ii]);
//printf("time: %f, slant: %f ==> line: %f, samp %f\n",
// time_in[ii], slant, line_out[ii], samp_out[ii]);
}
samp_accels[jj] = gsl_interp_accel_alloc();
samp_splines[jj] = gsl_spline_alloc(gsl_interp_cspline, n);
gsl_spline_init(samp_splines[jj], time_in, samp_out, n);
line_accels[jj] = gsl_interp_accel_alloc();
line_splines[jj] = gsl_spline_alloc(gsl_interp_cspline, n);
gsl_spline_init(line_splines[jj], time_in, line_out, n);
}
// now, we're on to the resampling stage.. loop through output pixels
asfPrintStatus("Generating slant range image...\n");
double no_data_value = meta_is_valid_double(inMeta->general->no_data) ?
inMeta->general->no_data : 0;
// keep track of error sizes
double max_error = 0;
double avg_error = 0;
int count = 0;
// these stride values allow us to track when we're in between grid points
int ii_n = onl/n;
int jj_n = ons/n;
int ii_n2 = ii_n/2;
int jj_n2 = jj_n/2;
// set up output metadata
meta_parameters *outMeta = meta_read(infile);
if (outMeta->transform) {
FREE(outMeta->transform);
outMeta->transform = NULL;
}
if (outMeta->projection) {
FREE(outMeta->projection);
outMeta->projection = NULL;
}
outMeta->general->line_count = onl;
outMeta->general->sample_count = ons;
if (!outMeta->sar)
outMeta->sar = meta_sar_init();
outMeta->sar->image_type = 'S';
outMeta->sar->azimuth_time_per_pixel = time_incr;
assert(outMeta->sar->azimuth_time_per_pixel < 0);
outMeta->sar->time_shift = time_start;
outMeta->general->y_pixel_size = inMeta->sar->azimuth_time_per_pixel /
time_incr * inMeta->general->y_pixel_size;
assert(outMeta->general->y_pixel_size > 0);
outMeta->sar->slant_range_first_pixel = slant_start;
outMeta->general->x_pixel_size = slant_incr;
outMeta->sar->line_increment = outMeta->sar->sample_increment = 1;
outMeta->general->start_sample = outMeta->general->start_line = 0;
outMeta->general->no_data = no_data_value;
char **band_name = extract_band_names(inMeta->general->bands,
inMeta->general->band_count);
// now generate output image
char *img_file = appendExt(outfile, ".img");
float *out = MALLOC(sizeof(float) * ons);
for (kk=0; kk<inMeta->general->band_count; ++kk) {
if (inMeta->general->band_count != 1)
asfPrintStatus("Working on band: %s\n", band_name[kk]);
// for the 2nd and higher bands, free the band from the previous iteration,
// and read in the next band from the input image
if (kk>0) {
float_image_free(in);
asfPrintStatus("Loading input...\n");
in = float_image_band_new_from_metadata(inMeta, kk, infile);
}
FILE *ofp = FOPEN(img_file, kk==0 ? "wb" : "ab");
asfPrintStatus("Generating output...\n");
for (ii=0; ii<onl; ++ii) {
asfLineMeter(ii,onl);
double time = time_start + ii * time_incr;
// set up horizontal splines for this row
gsl_interp_accel *samp_accel = gsl_interp_accel_alloc();
gsl_spline *samp_spline = gsl_spline_alloc(gsl_interp_cspline, n);
gsl_interp_accel *line_accel = gsl_interp_accel_alloc();
gsl_spline *line_spline = gsl_spline_alloc(gsl_interp_cspline, n);
//printf("time: %f slant: %f\n", time, slant_start);
for (jj=0; jj<n; ++jj) {
slant_in[jj] = slant_start + jj * slant_grid_incr;
//printf("time: %f slant: %f\n", time, slant_in[jj]);
samp_out[jj] = gsl_spline_eval_check(samp_splines[jj], time,
samp_accels[jj]);
line_out[jj] = gsl_spline_eval_check(line_splines[jj], time,
line_accels[jj]);
//printf("samp_out: %f line_out: %f\n", samp_out[jj], line_out[jj]);
}
gsl_spline_init(samp_spline, slant_in, samp_out, n);
gsl_spline_init(line_spline, slant_in, line_out, n);
// use the splines to produce output pixels
for (jj=0; jj<ons; ++jj) {
double slant = slant_start + jj * slant_incr;
double samp = gsl_spline_eval_check(samp_spline, slant, samp_accel);
double line = gsl_spline_eval_check(line_spline, slant, line_accel);
// check the spline every so often (halfway between grid points)
// only do this on band #1 (the reference band)
if (kk==0 && ii%ii_n2==0 &&
ii%ii_n!=0 && jj%jj_n2==0 && jj%jj_n!=0)
{
double samp_real, line_real;
ts2ls(inMeta, time, slant, &line_real, &samp_real);
double err = (line-line_real)*(line-line_real) +
(samp-samp_real)*(samp-samp_real);
//printf("(%d,%d) -- Actual: (%f,%f) Splined: (%f,%f)\n",
// ii, jj, line_real, samp_real, line, samp);
if (err > max_error) max_error = err;
avg_error += err;
++count;
}
// now interpolate within the original image
// if we are outside, use "no_data" from metadata
double val = no_data_value;
if (line > 0 && line < nl-1 && samp > 0 && samp < ns-1)
val = float_image_sample(in, samp, line, sampling_method);
out[jj] = (float)val;
}
gsl_interp_accel_free(samp_accel);
gsl_spline_free(samp_spline);
gsl_interp_accel_free(line_accel);
gsl_spline_free(line_spline);
put_float_line(ofp, outMeta, ii, out);
}
fclose(ofp);
}
// free the last band of the input
float_image_free(in);
FREE(slant_in);
FREE(line_out);
FREE(samp_out);
for (ii=0; ii<n; ++ii) {
gsl_interp_accel_free(samp_accels[ii]);
gsl_spline_free(samp_splines[ii]);
gsl_interp_accel_free(line_accels[ii]);
gsl_spline_free(line_splines[ii]);
}
FREE(samp_accels);
FREE(samp_splines);
FREE(line_accels);
FREE(line_splines);
FREE(out);
for (kk=0; kk<inMeta->general->band_count; ++kk)
FREE(band_name[kk]);
FREE(band_name);
// see how bad our errors were
avg_error /= (double)count;
asfPrintStatus("Model max error: %f, avg: %f\n",
max_error, avg_error);
double thresh = 0.1;
if (max_error > 100*thresh)
asfPrintError("Maximum error exceeded threshold: %f > %f\n",
max_error, 100*thresh);
else if (avg_error > 10*thresh)
asfPrintError("Average error exceeded threshold: %f > %f\n",
avg_error, 10*thresh);
if (max_error > 10*thresh)
asfPrintWarning("Maximum error exceeds threshold: %f > %f\n",
max_error, 10*thresh);
if (avg_error > thresh)
asfPrintWarning("Average error exceeds threshold: %f > %f\n",
avg_error, thresh);
char *meta_file = appendExt(outfile, ".meta");
asfPrintStatus("Writing %s\n", meta_file);
meta_write(outMeta, meta_file);
free(meta_file);
free(img_file);
meta_free(outMeta);
meta_free(inMeta);
return 0; //success
}
main(int argc, char *argv[])
{
FILE *fpin, *fpout;
float ibuff[CPX_PIX*2*LD];
float **obuff;
float b[CPX_PIX];
float c[CPX_PIX/LA];
int cla,nl;
int i,j,k,line;
int olines, osamps;
int oline, osamp;
double t;
char basefile[256], infile[256], outbasefile[256], outfile[256], roifile[256];
char *hdrfile;
ymd_date date;
hms_time time;
meta_parameters *meta;
char *mon[13]={"","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep",
"Oct","Nov","Dec"};
char dir; // orbit direction - A or D
double x, y, z; // state vector positions at start of segment
double xdot, ydot, zdot; // state vector veloctiy at start of segment
int META_ONLY = 0; // only create meta file, no img file
int SEPARATE_ROI_FILE = 0; // CLA roi file given?
int USE_TLES = 1; // TLE/state vector switch
int ESA_FRAME = 0; // switch to control output file names
int node = 0;
asfSplashScreen(argc, argv);
if (argc<2 || argc>9) { give_usage(argc,argv); exit(1); }
while ((cla=getopt(argc,argv,"mvcE:r:")) != -1)
switch(cla) {
case 'm':
META_ONLY = 1;
printf("Using meta only option\n");
break;
case 'r':
strcpy(roifile,optarg);
SEPARATE_ROI_FILE = 1;
break;
case 'E':
ESA_FRAME = 1;
node = atoi(optarg);
break;
case 'v':
USE_TLES = 0;
break;
case 'c':
USE_CLOCK_DRIFT = 1;
break;
case '?':
give_usage(argc,argv);
printf("Unknown option %s\n",optarg);
exit(1);
default:
give_usage(argc,argv);
exit(1);
}
strcpy(basefile,argv[optind]);
strcpy(infile,basefile);
strcat(infile,".slc");
/* if no separate roi.in file is specified, use the main name */
if (SEPARATE_ROI_FILE == 0) {
strcpy(roifile,basefile);
strcat(roifile,".roi.in");
}
/* Read parameters from the ROI.in file */
read_roi_infile(roifile);
nl = npatches * patch_size;
hdrfile = get_basename(datfilename);
strcat(hdrfile,".hdr");
/* Read the start time for this image from the hdr file */
read_hdrfile(hdrfile);
if (USE_TLES == 0)
{
int cnt;
int year, month, day, hour, min;
double sec, thisSec;
FILE *fpvec, *fpo;
char tmp[256];
sprintf(tmp,"/home/talogan/Seasat_State_Vectors/%3i.ebf",start_date);
fpvec = fopen(tmp,"r");
if (fpvec == NULL) {
printf("Unable to open state vector file for day %i\n",start_date);
printf("Defaulting to using TLEs instead\n");
USE_TLES = 1;
} else {
cnt = fscanf(fpvec,"%i %i %i %i %i %lf %lf %lf %lf %lf %lf %lf",&year,&month,&day,&hour,&min,&sec,&x,&y,&z,&xdot,&ydot,&zdot);
thisSec = (double) ((hour*60+min)*60)+sec;
/* seek to the correct second of the day for the START of this file
-----------------------------------------------------------------*/
while (cnt == 12 && start_sec > (thisSec+1.0)) {
cnt = fscanf(fpvec,"%i %i %i %i %i %lf %lf %lf %lf %lf %lf %lf",&year,&month,&day,&hour,&min,&sec,&x,&y,&z,&xdot,&ydot,&zdot);
thisSec = (double) ((hour*60+min)*60)+sec;
}
printf("Found closest second %lf\n",thisSec);
/* need to create a state vector file the start of this image
------------------------------------------------------------*/
stateVector vec, last_vec;
last_vec.pos.x = x; last_vec.pos.y = y; last_vec.pos.z = z;
last_vec.vel.x = xdot; last_vec.vel.y = ydot; last_vec.vel.z = zdot;
vec = propagate(last_vec,thisSec,start_sec);
x = vec.pos.x; y = vec.pos.y; z = vec.pos.z;
xdot = vec.vel.x; ydot = vec.vel.y; zdot = vec.vel.z;
}
}
if (USE_TLES == 1) {
/* get the correct state vector */
printf("Propagating state vectors to requested time...\n");
create_input_tle_file(s_date,s_time,"tle1.txt");
propagate_state_vector("tle1.txt");
printf("\n\nConverting state vectors from ECI to ECEF\n");
fix_state_vectors(s_date.year,s_date.jd,s_time.hour,s_time.min,s_time.sec);
remove("tle1.txt");
remove("propagated_state_vector.txt");
printf("Reading first state vector\n");
FILE *fpvec = fopen("fixed_state_vector.txt","r");
if (fscanf(fpvec,"%lf %lf %lf %lf %lf %lf %lf\n",&t,&x,&y,&z,&xdot,&ydot,&zdot)!=7)
{ printf("ERROR: Unable to find state vector in fixed_state_vector.txt file\n"); exit(1); }
fclose(fpvec);
remove("fixed_state_vector.txt");
}
if (zdot > 0.0) dir = 'A'; else dir = 'D';
/* set up output image parameters */
olines = nl / LD;
osamps = ns / LA;
/* Create the meta file */
printf("Initializing the meta structure\n");
meta = raw_init();
/* Propagate the state vectors */
printf("Creating state vectors\n");
stateVector stVec;/*Source state vector*/
stVec.pos.x = x;
stVec.pos.y = y;
stVec.pos.z = z;
stVec.vel.x = xdot;
stVec.vel.y = ydot;
stVec.vel.z = zdot;
date_jd2ymd(&s_date,&date);
meta->state_vectors = meta_state_vectors_init(1);
meta->state_vectors->vecs[0].vec = stVec;
meta->state_vectors->year = date.year;
meta->state_vectors->julDay = s_date.jd;
meta->state_vectors->second = date_hms2sec(&s_time);
meta->state_vectors->vecs[0].time = 0;
int num_vecs = 2 + (int)(nl*PRI)/30.0;
propagate_state(meta, num_vecs+1, (nl*PRI)/num_vecs);
printf("Calculating scene geometry parameters\n");
double RE = r_awgs84;
double RP = r_awgs84 * sqrt(1-r_e2wgs84);
double imgSec=date2sec(&s_date,&s_time); // time at start of image
int num = meta->state_vectors->num / 2; // closest state vector to center of image
double sourceSec = imgSec+meta->state_vectors->vecs[num].time; // time at closest state vector
double destSec = imgSec+meta->state_vectors->vecs[meta->state_vectors->num-1].time/2; // time at center of image
printf("Finding center state vector\n");
stateVector midVec = propagate(meta->state_vectors->vecs[num].vec,sourceSec,destSec); // state vector at middle time of image
x = midVec.pos.x;
y = midVec.pos.y;
z = midVec.pos.z;
xdot = midVec.vel.x;
ydot = midVec.vel.y;
zdot = midVec.vel.z;
double geocentric_lat_nadir = asin(z / sqrt (x*x+y*y+z*z));
double lon_nadir = atan2(x,y)*180/M_PI;
double RE_nadir = (RE * RP) / sqrt((RP*cos(geocentric_lat_nadir)*RP*cos(geocentric_lat_nadir)) +
(RE*sin(geocentric_lat_nadir)*RE*sin(geocentric_lat_nadir)));
double Rsc = sqrt(x*x+y*y+z*z);
double geodetic_lat_nadir = atan(tan(geocentric_lat_nadir)/(1-r_e2wgs84));
double lat_nadir = geodetic_lat_nadir*180/M_PI;
double gamma = geodetic_lat_nadir - geocentric_lat_nadir;
printf("Filling in meta->general parameters\n");
strcpy(meta->general->sensor,"SEASAT");
strcpy(meta->general->sensor_name,"SAR");
strcpy(meta->general->mode,"STD");
strcpy(meta->general->processor,"ASPS-v" ASPS_VERSION_STRING);
meta->general->data_type = REAL32;
meta->general->image_data_type = AMPLITUDE_IMAGE;
meta->general->radiometry = r_AMP;
sprintf(meta->general->acquisition_date, "%02d-%s-%4d %02d:%02d:%02.0f",
date.day, mon[date.month], date.year, s_time.hour, s_time.min, s_time.sec);
meta->general->orbit = time2rev(s_date,s_time);
meta->general->orbit_direction = dir;
if (ESA_FRAME == 1) meta->general->frame = node;
meta->general->band_count = 1;
strcpy(meta->general->bands,"HH");
meta->general->line_count = nl/LD;
meta->general->sample_count = ns/LA;
meta->general->start_line = 0;
meta->general->start_sample = 0;
meta->general->line_scaling = 1;
meta->general->sample_scaling = 1;
meta->general->x_pixel_size = (C / (2.0 * fs)) * LA;
switch (station_code) {
case 5:
strcpy(meta->general->receiving_station, "ULA");
break;
case 6:
strcpy(meta->general->receiving_station, "GDS");
break;
case 7:
strcpy(meta->general->receiving_station, "MIL");
break;
case 9:
strcpy(meta->general->receiving_station, "UKO");
break;
case 10:
strcpy(meta->general->receiving_station, "SNF");
break;
}
double orbit_vel = sqrt(9.81*RE_nadir*RE_nadir / Rsc);
double swath_vel = orbit_vel * RE_nadir / Rsc;
meta->general->y_pixel_size = (swath_vel * PRI) * LD; // TAL - Check the sc_vel...
meta->general->re_major = r_awgs84;
meta->general->re_minor = r_awgs84 * sqrt(1-r_e2wgs84);
// meta->general->bit_error_rate = ???
// meta->general->missing_lines = ???
// meta->general->no_data = ???
/*Create the SAR metadata block*/
printf("Creating the meta->sar block\n");
if (!meta->sar) meta->sar = meta_sar_init();
meta->sar->image_type = 'S';
meta->sar->look_direction = 'R';
meta->sar->azimuth_look_count = LD;
meta->sar->range_look_count = LA;
meta->sar->deskewed = 0;
meta->sar->original_line_count = nl;
meta->sar->original_sample_count = ns;
meta->sar->line_increment = 1;
meta->sar->sample_increment = 1;
meta->sar->range_time_per_pixel = 1/(2*fs);
// Should be this, right??? meta->sar->azimuth_time_per_pixel = PRI;
// Second try is this one meta->sar->azimuth_time_per_pixel = (destSec - imgSec) / (meta->sar->original_line_count/2);
meta->sar->azimuth_time_per_pixel = meta->general->y_pixel_size / swath_vel;
meta->sar->azimuth_time_per_pixel *= -1;
meta->sar->time_shift = fabs(meta->general->line_count*meta->sar->azimuth_time_per_pixel);
// meta->sar->slant_shift = -1080; // emperical value from a single delta scene
// meta->sar->time_shift = 0.18; // emperical value from a single delta scene
if (USE_CLOCK_DRIFT ==1) meta->sar->slant_shift = SEASAT_SLANT_SHIFT; // -1000.0;
else meta->sar->slant_shift = 0.0;
meta->sar->slant_range_first_pixel = srf;
meta->sar->wavelength = wavelength;
meta->sar->prf = prf;
meta->sar->earth_radius = meta_get_earth_radius(meta, meta->general->line_count/2.0, meta->general->sample_count/2.0);
meta->sar->satellite_height = Rsc;
meta->sar->range_doppler_coefficients[0] = dop1*prf;
meta->sar->range_doppler_coefficients[1] = dop2*prf;
meta->sar->range_doppler_coefficients[2] = dop3*prf;
meta->sar->azimuth_doppler_coefficients[0] = dop1*prf;
meta->sar->azimuth_doppler_coefficients[1] = 0;
meta->sar->azimuth_doppler_coefficients[2] = 0;
/// meta->sar->azimuth_processing_bandwidth = ????
meta->sar->chirp_rate = chirp_slope;
meta->sar->pulse_duration = pulse_duration;
meta->sar->range_sampling_rate = fs;
strcpy(meta->sar->polarization,"HH");
meta->sar->multilook = 1;
meta->sar->pitch = 0;
meta->sar->roll = 0;
meta->sar->yaw = 0;
/// meta->sar->incid_a[0-5] = ???
printf("Creating the meta->location block\n");
if (!meta->location) meta->location = meta_location_init();
meta_get_corner_coords(meta);
meta_get_latLon(meta,meta->general->line_count/2,meta->general->sample_count/2,0,
&meta->general->center_latitude, &meta->general->center_longitude);
if (ESA_FRAME==0) {
strcpy(outbasefile,basefile);
} else {
sprintf(outbasefile,"SS_%.5i_SLANT_F%.4i",meta->general->orbit,meta->general->frame);
}
strcpy(outfile,outbasefile);
strcat(outfile,".img");
strcpy(meta->general->basename,outbasefile);
if (META_ONLY==0) {
obuff = (float **) malloc (sizeof(float *)*olines);
for (i=0; i<olines; i++) obuff[i] = (float *) malloc (sizeof(float)*osamps);
/* Open the input slc file and output img file*/
fpin = fopen(infile,"rb");
if (fpin==NULL) {printf("ERROR: Unable to open input file %s\n",infile); exit(1);}
fpout = fopen(outfile,"wb");
/* Take the complex looks from the slc file to create the img file */
printf("Taking complex looks from file %s to create %s\n",infile,outfile);
oline = 0;
for (line=0; line < nl; line+=LD) {
if (line%2560==0) printf("\t%i\n",line);
fread(ibuff,sizeof(float),ns*2*LD,fpin);
/* take looks down */
for (j=0; j<ns; j++) {
b[j] = 0;
for (i=0; i<LD; i++)
b[j] = b[j] + (ibuff[(2*j)+(i*ns*2)]*ibuff[2*j+(i*ns*2)])
+ (ibuff[(2*j+1)+(i*ns*2)]*ibuff[(2*j+1)+(i*ns*2)]);
}
/* take looks across */
for (j=0; j<ns/LA; j++) {
c[j] = 0;
for (k=0;k<LA;k++)
c[j] = c[j] + b[j*LA+k];
c[j] = sqrt(c[j]);
}
byteswap(c,ns/LA);
for (j=0; j<osamps; j++) obuff[oline][j] = c[j];
oline++;
}
/* write out image in reverse order */
for (j=0; j<olines; j++) fwrite(obuff[olines-j-1],sizeof(float),osamps,fpout);
fclose(fpout);
fclose(fpin);
free(obuff);
} /* END IF META_ONLY */
printf("Writing out the meta file\n");
meta_write(meta, outbasefile);
if (META_ONLY == 0) {
char grfilename[256];
float grPixSiz = 12.5;
int err = 0;
if (ESA_FRAME == 1) {
char tmpstr[256];
char cropfile[256];
char tmpfile[256];
/* create the ground range image */
sprintf(grfilename,"temp_%.5i_STD_F%.4i",meta->general->orbit,meta->general->frame);
sr2gr_pixsiz(outbasefile, grfilename, grPixSiz);
/* crop the image to exact size */
sprintf(cropfile,"SS_%.5i_STD_F%.4i",meta->general->orbit,meta->general->frame);
trim(grfilename,cropfile,(long long)0,(long long)0,(long long)8000,(long long)8000);
/* remove the non-cropped ground range image */
strcat(strcpy(tmpstr,grfilename),".img");
remove(tmpstr);
strcat(strcpy(tmpstr,grfilename),".meta");
remove(tmpstr);
/* geocode and export to geotiff */
sprintf(tmpstr,"asf_geocode -p utm %s %s_utm\n",cropfile,cropfile);
err = system(tmpstr);
if (err) {printf("Error returned from asf_geocode\n"); exit(1);}
sprintf(tmpstr,"asf_export -format geotiff %s_utm %s\n",cropfile,cropfile);
err = system(tmpstr);
if (err) {printf("Error returned from asf_export to geotiff\n"); exit(1);}
/* remove the utm projected internal format image */
strcat(strcpy(tmpstr,cropfile),"_utm.img");
remove(tmpstr);
strcat(strcpy(tmpstr,cropfile),"_utm.meta");
remove(tmpstr);
/* this changes the basename in the metadata from blah_SLANT to blah_STD */
meta_parameters *crop_meta = meta_read(cropfile);
strcpy(crop_meta->general->basename, cropfile);
meta_write(crop_meta, cropfile);
meta_free(crop_meta);
/* create the dowsized QC image */
sprintf(tmpstr,"resample -scale 0.125 %s %s_small\n",cropfile,cropfile);
err = system(tmpstr);
if (err) {printf("Error returned from resample\n"); exit(1);}
sprintf(tmpfile,"%s_QCFULL",cropfile);
sprintf(tmpstr,"asf_export -format jpeg %s_small %s\n",cropfile,tmpfile);
err = system(tmpstr);
if (err) {printf("Error returned from asf_export to jpeg\n"); exit(1);}
/* remove the small .img file */
strcat(strcpy(tmpstr,cropfile),"_small.img");
remove(tmpstr);
strcat(strcpy(tmpstr,cropfile),"_small.meta");
remove(tmpstr);
/* create the subsampled QC image */
sprintf(tmpfile,"%s_QCSUB",cropfile);
trim(cropfile,tmpfile,(long long)3500,(long long)3500,(long long)1000,(long long)1000);
sprintf(tmpstr,"asf_export -format jpeg %s %s\n",tmpfile,tmpfile);
err = system(tmpstr);
if (err) {printf("Error returned from asf_export\n"); exit(1);}
/* run make_seasat_h5 */
sprintf(tmpstr,"make_seasat_h5 -gap %s.dis %s %s",basefile,cropfile,cropfile);
err = system(tmpstr);
if (err) {printf("Error returned from make_seasat_h5\n"); exit(1);}
/* remove the subsampled QC .img file */
strcat(strcpy(tmpstr,tmpfile),".img");
remove(tmpstr);
strcat(strcpy(tmpstr,tmpfile),".meta");
remove(tmpstr);
/* rename the ROI.in file to match the new file name */
sprintf(tmpfile,"%s.roi.in",cropfile);
rename(roifile,tmpfile);
} else {
strcpy(grfilename,basefile);
strcat(grfilename,"G12");
sr2gr_pixsiz(basefile, grfilename, grPixSiz);
}
}
exit(0);
}