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 *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;
}
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);
}
