void ceos_init_alos_stVec(const char *fName, ceos_description *ceos,
meta_parameters *meta)
{
struct pos_data_rec ppdr;
// Read platform position record
get_ppdr(fName,&ppdr);
// Initialize state vector
int vector_count=3;
double data_int = meta->sar->original_line_count / 2
* fabs(meta->sar->azimuth_time_per_pixel);
while (fabs(data_int) > 15.0) {
data_int /= 2;
vector_count = vector_count*2-1;
}
meta->state_vectors = meta_state_vectors_init(vector_count);
meta->state_vectors->vector_count = vector_count;
// Determine image start time
ymd_date imgDate;
julian_date imgJD;
hms_time imgTime;
date_dssr2date(ceos->dssr.inp_sctim, &imgDate, &imgTime);
date_ymd2jd(&imgDate, &imgJD);
double imgSec = date2sec(&imgJD, &imgTime);
imgSec -= ceos->dssr.sc_lin*fabs(meta->sar->azimuth_time_per_pixel);
sec2date(imgSec, &imgJD, &imgTime);
meta->state_vectors->year = (int) imgJD.year;
meta->state_vectors->julDay = (int) imgJD.jd;
meta->state_vectors->second = date_hms2sec(&imgTime);
// Assign position and velocity for center of image
int n = (vector_count - 1)/2;
double timeStart = get_timeDelta(ceos, &ppdr, meta);
double time = timeStart + n*data_int;
stateVector st;
st.pos.x = ppdr.orbit_ele[0];
st.pos.y = ppdr.orbit_ele[1];
st.pos.z = ppdr.orbit_ele[2];
st.vel.x = ppdr.orbit_ele[3];
st.vel.y = ppdr.orbit_ele[4];
st.vel.z = ppdr.orbit_ele[5];
meta->state_vectors->vecs[n].vec = st;
meta->state_vectors->vecs[n].time = time - timeStart;
int ii;
double newTime;
for (ii=0; ii<n; ii++) {
newTime = time - (n - ii)*data_int;
meta->state_vectors->vecs[ii].time = newTime - timeStart;
meta->state_vectors->vecs[ii].vec = propagate(st, time, newTime);
}
for (ii=n+1; ii<vector_count; ii++) {
newTime = time + (vector_count - n - 1)*data_int;
meta->state_vectors->vecs[ii].time = newTime - timeStart;
meta->state_vectors->vecs[ii].vec = propagate(st, time, newTime);
}
}
/*
Compute the average ymd_date date and hms_time time
-----------------------------------------------------*/
void average_ymdTimes(ymd_date *date1, ymd_date *date2,
hms_time *time1, hms_time *time2,
ymd_date *ave_date, hms_time *ave_time)
{
double secs1, secs2, ave_secs;
julian_date jd_1, jd_2, ave_jd;
date_ymd2jd(date1, &jd_1); // Julian date contains year and day number within that year
date_ymd2jd(date2, &jd_2);
secs1 = date2sec(&jd_1, time1); // Seconds from midnight, Jan 1, 1900 to julian date plus seconds into that day
secs2 = date2sec(&jd_2, time2);
ave_secs = (secs1 + secs2) / 2.0;
sec2date(ave_secs, &ave_jd, ave_time);
date_jd2ymd(&ave_jd, ave_date);
}
/***************************************************************
* Get_timeDelta:
* Return the time difference, in seconds, between the start
* of the state vectors (in the PPDR) and the start of the image
* (as described in the DSSR). Write this time to the given
* meta_parameters->state_vectors structure.*/
double get_timeDelta(ceos_description *ceos,struct pos_data_rec *ppdr,meta_parameters *meta)
{
ymd_date imgDate;
julian_date imgJD,stJD;
hms_time imgTime,stTime;
double imgSec,stSec;/*Seconds since 1900 for start of image and start of state vectors*/
/*Read time of *start* of state vectors*/
stJD.year = (int) ppdr->year;
stJD.jd = (int) ppdr->gmt_day;
date_sec2hms(ppdr->gmt_sec,&stTime);
stSec=date2sec(&stJD,&stTime);
/*Compute the *scene* start time from the CEOS DSSR: */
/* begin with scene center time */
if (ceos->facility == BEIJING)
date_dssr2time(ceos->dssr.inp_sctim,&imgDate,&imgTime);
else
date_dssr2date(ceos->dssr.inp_sctim,&imgDate,&imgTime);
date_ymd2jd(&imgDate,&imgJD);
imgSec=date2sec(&imgJD,&imgTime);
if (ceos->processor==FOCUS && ceos->product==CCSD) {
/* do nothing-- dssr "inp_sctim" already gives scene start time */
}
else if (0!=strcmp(ceos->dssr.az_time_first,""))
{ /* e.g., ESA data. "az_time_first" field gives start of image */
date_dssr2time(ceos->dssr.az_time_first,&imgDate,&imgTime);
imgSec=date2sec(&imgJD,&imgTime);
}
else if (ceos->facility==EOC)
{
imgSec-=ceos->dssr.sc_lin*fabs(meta->sar->azimuth_time_per_pixel);
}
else {/*Convert scene center time to scene *start* time, by
subtracting off the center line # * the time/line */
imgSec-=ceos->dssr.sc_lin*fabs(meta->sar->azimuth_time_per_pixel);
}
/*
// Complex ALOS data have an additional 1 sec shift
// Still under investigation: Need word from DQ on this
if (ceos->facility==EOC && ceos->product==SLC)
imgSec -= 1.0;
*/
/*Convert scene center # of seconds back to date/time*/
sec2date(imgSec,&imgJD,&imgTime);
/*Write image time to meta->state_vectors structure*/
meta->state_vectors->year = (int) imgJD.year;
meta->state_vectors->julDay = (int) imgJD.jd;
meta->state_vectors->second = date_hms2sec(&imgTime);
/*Return the time between state vector start and image start*/
return stSec-imgSec;
}
// input is string in the format "DD-MMM-YYYY, hh:mm:ss" (as in parse_date())
// output is seconds since midnight, Jan 1, 1900 (as from date2sec())
double seconds_from_str(const char *date_str)
{
ymd_date d;
hms_time t;
parse_date(date_str, &d, &t);
t.sec = 0;
julian_date jd;
date_ymd2jd(&d, &jd);
return date2sec(&jd, &t);
}
/* Calculate seconds elapsed from given refYear to the
seekYear, seekDay (julian day), and seekTime
----------------------------------------------------*/
double timeSince(ymd_date *seekDate, hms_time *seekTime, int refYear)
{
double totTime;
int totDays=0,
year;
julian_date julDay;
date_ymd2jd(seekDate,&julDay);
for (year = refYear; year < julDay.year; year++) totDays += date_getDaysInYear(year);
totDays += julDay.jd;
totTime = totDays * 24.0 * 3600.0 + date_hms2sec(seekTime);
return(totTime);
}
terrasar_meta *read_terrasar_meta(const char *dataFile)
{
int ii, kk, numStateVectors, numDopplerEstimates;
ymd_date imgStartDate, imgDopplerDate, date;
hms_time imgStartTime, imgDopplerTime, time;
julian_date julianDate;
char timeStr[30], str[50];
tsx_doppler_params *tsx;
terrasar_meta *terrasar = terrasar_meta_init();
if (!fileExists(dataFile))
asfPrintError("Metadata file (%s) does not exist!\n", dataFile);
xmlDoc *doc = xmlReadFile(dataFile, NULL, 0);
if (!doc)
asfPrintError("Could not parse file %s\n", dataFile);
strcpy(terrasar->filename, xml_get_string_value(doc,
"level1Product.productComponents.annotation.file.location.filename"));
strcpy(terrasar->mission, xml_get_string_value(doc,
"level1Product.productInfo.missionInfo.mission"));
strcpy(terrasar->sensor, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.sensor"));
strcpy(terrasar->imagingMode, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.imagingMode"));
strcpy(terrasar->elevationBeamConfiguration, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.elevationBeamConfiguration"));
strcpy(terrasar->imageDataType, xml_get_string_value(doc,
"level1Product.productInfo.imageDataInfo.imageDataType"));
terrasar->imageDataDepth = xml_get_int_value(doc,
"level1Product.productInfo.imageDataInfo.imageDataDepth");
strcpy(terrasar->imageDataFormat, xml_get_string_value(doc,
"level1Product.productInfo.imageDataInfo.imageDataFormat"));
strcpy(terrasar->azimuthTimeUTC, xml_get_string_value(doc,
"level1Product.productInfo.sceneInfo.sceneCenterCoord.azimuthTimeUTC"));
terrasar->absOrbit =
xml_get_int_value(doc, "level1Product.productInfo.missionInfo.absOrbit");
strcpy(terrasar->orbitDirection, xml_get_string_value(doc,
"level1Product.productInfo.missionInfo.orbitDirection"));
terrasar->numberOfLayers = xml_get_int_value(doc,
"level1Product.productInfo.imageDataInfo.numberOfLayers");
strcpy(terrasar->polarisationMode, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationMode"));
if (strcmp_case(terrasar->polarisationMode, "SINGLE") == 0)
strcpy(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[0]"));
else if (strcmp_case(terrasar->polarisationMode, "DUAL") == 0) {
strcpy(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[0]"));
strcat(terrasar->bands, ",");
strcat(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[1]"));
}
else if (strcmp_case(terrasar->polarisationMode, "TWIN") == 0) {
strcpy(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[0]"));
strcat(terrasar->bands, ",");
strcat(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[1]"));
}
else if (strcmp_case(terrasar->polarisationMode, "QUAD") == 0) {
strcpy(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[0]"));
strcat(terrasar->bands, ",");
strcat(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[1]"));
strcat(terrasar->bands, ",");
strcat(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[2]"));
strcat(terrasar->bands, ",");
strcat(terrasar->bands, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.polarisationList.polLayer[3]"));
}
terrasar->numberOfRows = xml_get_int_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.numberOfRows");
terrasar->numberOfColumns = xml_get_int_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.numberOfColumns");
strcpy(terrasar->projection, xml_get_string_value(doc,
"level1Product.productInfo.productVariantInfo.projection"));
if (strcmp_case(terrasar->projection, "GROUNDRANGE") == 0)
terrasar->rangeResolution = xml_get_double_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster."
"groundRangeResolution");
if (strcmp_case(terrasar->projection, "SLANTRANGE") == 0)
terrasar->rangeResolution = xml_get_double_value(doc,
"level1Product.productSpecific.complexImageInfo.projectedSpacingRange."
"slantRange");
// FIXME: cover MAP case
terrasar->azimuthResolution = xml_get_double_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.azimuthResolution");
terrasar->sceneCenterCoordLat = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCenterCoord.lat");
terrasar->sceneCenterCoordLon = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCenterCoord.lon");
strcpy(terrasar->lookDirection, xml_get_string_value(doc,
"level1Product.productInfo.acquisitionInfo.lookDirection"));
terrasar->azimuthLooks = xml_get_int_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.azimuthLooks");
terrasar->rangeLooks = xml_get_int_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.rangeLooks");
strcpy(terrasar->imageCoordinateType, xml_get_string_value(doc,
"level1Product.productSpecific.complexImageInfo.imageCoordinateType"));
terrasar->rowSpacing = xml_get_double_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.rowSpacing");
terrasar->columnSpacing = xml_get_double_value(doc,
"level1Product.productInfo.imageDataInfo.imageRaster.columnSpacing");
terrasar->rangeTimeFirst = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.rangeTime.firstPixel");
terrasar->rangeTimeLast = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.rangeTime.lastPixel");
terrasar->centerFrequency = xml_get_double_value(doc,
"level1Product.instrument.radarParameters.centerFrequency");
terrasar->prf = xml_get_double_value(doc,
"level1Product.instrument.settings.settingRecord.PRF");
terrasar->totalProcessedAzimuthBandwidth = xml_get_double_value(doc,
"level1Product.processing.processingParameter."
"totalProcessedAzimuthBandwidth");
// chirp rate ???
terrasar->pulseLength = xml_get_double_value(doc,
"level1Product.processing.processingParameter.rangeCompression.chirps."
"referenceChirp.pulseLength");
terrasar->rsf = xml_get_double_value(doc,
"level1Product.instrument.settings.RSF");
// pitch, roll, yaw ???
// read Doppler values
terrasar->doppler = meta_doppler_init();
terrasar->doppler->type = tsx_doppler;
numDopplerEstimates = xml_get_int_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0]."
"numberOfDopplerRecords");
tsx = tsx_doppler_init(numDopplerEstimates);
terrasar->doppler->tsx = tsx;
strcpy(str, xml_get_string_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0].dopplerEstimate[0]."
"timeUTC"));
date_terrasar2date(str, &imgDopplerDate, &imgDopplerTime);
tsx->year = imgDopplerDate.year;
date_ymd2jd(&imgDopplerDate, &julianDate);
tsx->julDay = julianDate.jd;
tsx->second = date_hms2sec(&imgDopplerTime);
for (ii=0; ii<numDopplerEstimates; ii++) {
strcpy(timeStr, xml_get_string_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0]."
"dopplerEstimate[%d].timeUTC", ii));
date_terrasar2date(timeStr, &date, &time);
tsx->dop[ii].time =
time_difference(&date, &time, &imgDopplerDate, &imgDopplerTime);
tsx->dop[ii].first_range_time = xml_get_double_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0]."
"dopplerEstimate[%d].combinedDoppler.validityRangeMin", ii);
tsx->dop[ii].reference_time = xml_get_double_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0]."
"dopplerEstimate[%d].combinedDoppler.referencePoint", ii);
tsx->dop[ii].poly_degree = xml_get_double_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0]."
"dopplerEstimate[%d].combinedDoppler.polynomialDegree", ii);
tsx->dop[ii].coefficient =
(double *) MALLOC(sizeof(double) * (tsx->dop[ii].poly_degree+1));
for (kk=0; kk<=tsx->dop[ii].poly_degree; kk++)
tsx->dop[ii].coefficient[kk] = xml_get_double_value(doc,
"level1Product.processing.doppler.dopplerCentroid[0]."
"dopplerEstimate[%d].combinedDoppler.coefficient[%d]", ii, kk);
}
// read state vectors
strcpy(terrasar->sceneStart, xml_get_string_value(doc,
"level1Product.productInfo.sceneInfo.start.timeUTC"));
date_terrasar2date(terrasar->sceneStart, &imgStartDate, &imgStartTime);
strcpy(terrasar->sceneStop, xml_get_string_value(doc,
"level1Product.productInfo.sceneInfo.stop.timeUTC"));
numStateVectors = xml_get_int_value(doc,
"level1Product.platform.orbit.orbitHeader.numStateVectors");
terrasar->state_vectors = meta_state_vectors_init(numStateVectors);
terrasar->state_vectors->year = imgStartDate.year;
date_ymd2jd(&imgStartDate, &julianDate);
terrasar->state_vectors->julDay = julianDate.jd;
terrasar->state_vectors->second = date_hms2sec(&imgStartTime);
for (ii=0; ii<numStateVectors; ii++) {
sprintf(str, "level1Product.platform.orbit.stateVec[%d].timeUTC", ii);
strcpy(timeStr, xml_get_string_value(doc, str));
date_terrasar2date(timeStr, &date, &time);
terrasar->state_vectors->vecs[ii].time =
time_difference(&date, &time, &imgStartDate, &imgStartTime);
sprintf(str, "level1Product.platform.orbit.stateVec[%d].posX", ii);
terrasar->state_vectors->vecs[ii].vec.pos.x =
xml_get_double_value(doc, str);
sprintf(str, "level1Product.platform.orbit.stateVec[%d].posY", ii);
terrasar->state_vectors->vecs[ii].vec.pos.y =
xml_get_double_value(doc, str);
sprintf(str, "level1Product.platform.orbit.stateVec[%d].posZ", ii);
terrasar->state_vectors->vecs[ii].vec.pos.z =
xml_get_double_value(doc, str);
sprintf(str, "level1Product.platform.orbit.stateVec[%d].velX", ii);
terrasar->state_vectors->vecs[ii].vec.vel.x =
xml_get_double_value(doc, str);
sprintf(str, "level1Product.platform.orbit.stateVec[%d].velY", ii);
terrasar->state_vectors->vecs[ii].vec.vel.y =
xml_get_double_value(doc, str);
sprintf(str, "level1Product.platform.orbit.stateVec[%d].velZ", ii);
terrasar->state_vectors->vecs[ii].vec.vel.z =
xml_get_double_value(doc, str);
}
// read location information
terrasar->sceneCornerCoord1Lat = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[0].lat");
terrasar->sceneCornerCoord1Lon = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[0].lon");
terrasar->sceneCornerCoord2Lat = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[1].lat");
terrasar->sceneCornerCoord2Lon = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[1].lon");
terrasar->sceneCornerCoord3Lat = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[2].lat");
terrasar->sceneCornerCoord3Lon = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[2].lon");
terrasar->sceneCornerCoord4Lat = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[3].lat");
terrasar->sceneCornerCoord4Lon = xml_get_double_value(doc,
"level1Product.productInfo.sceneInfo.sceneCornerCoord[3].lon");
// read calibration information
char calFlag[15];
strcpy(calFlag, xml_get_string_value(doc,
"level1Product.productInfo.productVariantInfo.radiometricCorrection"));
if (strcmp_case(calFlag, "CALIBRATED") == 0)
terrasar->cal_factor = xml_get_double_value(doc,
"level1Product.calibration.calibrationConstant.calFactor");
xmlFreeDoc(doc);
xmlCleanupParser();
return terrasar;
}
radarsat2_meta *read_radarsat2_meta_ext(const char *dataFile, int cal)
{
int ii, numStateVectors, numDopplerEstimates;
ymd_date imgStartDate, date;
hms_time imgStartTime, time;
julian_date julianDate;
char timeStr[30], str[150];
radarsat2_doppler_params *r2_doppler;
radarsat2_meta *radarsat2 = radarsat2_meta_init();
if (!fileExists(dataFile))
asfPrintError("Metadata file (%s) does not exist!\n", dataFile);
char *path = (char *) MALLOC(sizeof(char)*512);
char *file = (char *) MALLOC(sizeof(char)*128);
split_dir_and_file(dataFile, path, file);
xmlDoc *doc = xmlReadFile(dataFile, NULL, 0);
if (!doc)
asfPrintError("Could not parse file %s\n", dataFile);
strcpy(radarsat2->satellite, xml_get_string_value(doc,
"product.sourceAttributes.satellite"));
strcpy(radarsat2->sensor, xml_get_string_value(doc,
"product.sourceAttributes.sensor"));
strcpy(radarsat2->beamModeMnemonic, xml_get_string_value(doc,
"product.sourceAttributes.beamModeMnemonic"));
strcpy(radarsat2->acquisitionType, xml_get_string_value(doc,
"product.sourceAttributes.radarParameters.acquisitionType"));
strcpy(radarsat2->productType, xml_get_string_value(doc,
"product.imageGenerationParameters.generalProcessingInformation."
"productType"));
strcpy(radarsat2->dataType, xml_get_string_value(doc,
"product.imageAttributes.rasterAttributes.dataType"));
strcpy(radarsat2->processingFacility, xml_get_string_value(doc,
"product.imageGenerationParameters.generalProcessingInformation."
"processingFacility"));
strcpy(radarsat2->zeroDopplerAzimuthTime, xml_get_string_value(doc,
"product.imageGenerationParameters.slantRangeToGroundRange."
"zeroDopplerAzimuthTime"));
strcpy(radarsat2->softwareVersion, xml_get_string_value(doc,
"product.imageGenerationParameters.generalProcessingInformation."
"softwareVersion"));
radarsat2->bitsPerSample = xml_get_int_value(doc,
"product.productInfo.imageDataInfo.imageDataDepth");
//radarsat2->absOrbit =
//xml_get_int_value(doc, "product.productInfo.missionInfo.absOrbit");
strcpy(radarsat2->passDirection, xml_get_string_value(doc,
"product.sourceAttributes.orbitAndAttitude.orbitInformation."
"passDirection"));
// Number of bands needs to be derived from polarizations string
int band_count = 0;
char *attribute = (char *) MALLOC(sizeof(char)*128);
char *fileName = (char *) MALLOC(sizeof(char)*512);
strcpy(radarsat2->polarizations, xml_get_string_value(doc,
"product.sourceAttributes.radarParameters.polarizations"));
for (ii=0; ii<strlen(radarsat2->polarizations)-1; ii++)
if (radarsat2->polarizations[ii] == ' ')
radarsat2->polarizations[ii] = ',';
if (strstr(radarsat2->polarizations, "HH"))
band_count++;
if (strstr(radarsat2->polarizations, "VV"))
band_count++;
if (strstr(radarsat2->polarizations, "HV"))
band_count++;
if (strstr(radarsat2->polarizations, "VH"))
band_count++;
radarsat2->band_count = band_count;
strcpy(radarsat2->filename, "");
strcpy(radarsat2->bands, "");
// Park the filenames in the basename field of the metadata and replace
// it with the directory name once we are done with importing the data
for (ii=0; ii<band_count; ii++) {
sprintf(str,
"product.imageAttributes.fullResolutionImageData[%d].pole", ii);
strcpy(attribute, xml_get_string_attribute(doc, str));
sprintf(str, "product.imageAttributes.fullResolutionImageData[%d]", ii);
strcpy(fileName, xml_get_string_value(doc, str));
if (ii == 0) {
sprintf(radarsat2->filename, "%s", fileName);
sprintf(radarsat2->bands, "AMP-%s,PHASE-%s",
uc(attribute), uc(attribute));
}
else {
strcat(radarsat2->filename, ",");
strcat(radarsat2->filename, fileName);
strcat(radarsat2->bands, ",");
sprintf(str, "AMP-%s,PHASE-%s", uc(attribute), uc(attribute));
strcat(radarsat2->bands, str);
}
}
FREE(fileName);
FREE(attribute);
radarsat2->numberOfLines = xml_get_int_value(doc,
"product.imageAttributes.rasterAttributes.numberOfLines");
radarsat2->numberOfSamplesPerLine = xml_get_int_value(doc,
"product.imageAttributes.rasterAttributes.numberOfSamplesPerLine");
radarsat2->sampledPixelSpacing = xml_get_double_value(doc,
"product.imageAttributes.rasterAttributes.sampledPixelSpacing");
radarsat2->sampledLineSpacing = xml_get_double_value(doc,
"product.imageAttributes.rasterAttributes.sampledLineSpacing");
radarsat2->semiMajorAxis = xml_get_double_value(doc,
"product.imageAttributes.geographicInformation."
"referenceEllipsoidParameters.semiMajorAxis");
radarsat2->semiMinorAxis = xml_get_double_value(doc,
"product.imageAttributes.geographicInformation."
"referenceEllipsoidParameters.semiMinorAxis");
strcpy(radarsat2->lineTimeOrdering, xml_get_string_value(doc,
"product.imageAttributes.rasterAttributes.lineTimeOrdering"));
strcpy(radarsat2->pixelTimeOrdering, xml_get_string_value(doc,
"product.imageAttributes.rasterAttributes.pixelTimeOrdering"));
strcpy(radarsat2->antennaPointing, xml_get_string_value(doc,
"product.sourceAttributes.radarParameters.antennaPointing"));
radarsat2->numberOfAzimuthLooks = xml_get_int_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"numberOfAzimuthLooks");
radarsat2->numberOfRangeLooks = xml_get_int_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"numberOfRangeLooks");
radarsat2->slantRangeNearEdge = xml_get_double_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"slantRangeNearEdge");
radarsat2->radarCenterFrequency = xml_get_double_value(doc,
"product.sourceAttributes.radarParameters.radarCenterFrequency");
radarsat2->pulseRepetitionFrequency = xml_get_double_value(doc,
"product.sourceAttributes.radarParameters.pulseRepetitionFrequency");
radarsat2->satelliteHeight = xml_get_double_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"satelliteHeight");
radarsat2->totalProcessedAzimuthBandwidth = xml_get_double_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"totalProcessedAzimuthBandwidth");
// chirp rate ???
radarsat2->pulseLength = xml_get_double_value(doc,
"product.sourceAttributes.radarParameters.pulseLength");
radarsat2->adcSamplingRate = xml_get_double_value(doc,
"product.sourceAttributes.radarParameters.adcSamplingRate");
// pitch, roll, yaw ???
// read Doppler values
radarsat2->doppler = meta_doppler_init();
radarsat2->doppler->type = radarsat2_doppler;
char *dopplerCentroidStr;
dopplerCentroidStr = (char *) MALLOC(sizeof(char)*512);
strcpy(dopplerCentroidStr, xml_get_string_value(doc,
"product.imageGenerationParameters.dopplerCentroid."
"dopplerCentroidCoefficients"));
numDopplerEstimates = getNumParamsInString(dopplerCentroidStr);
r2_doppler = radarsat2_doppler_init(numDopplerEstimates);
radarsat2->doppler->r2 = r2_doppler;
r2_doppler->ref_time_centroid = xml_get_double_value(doc,
"product.imageGenerationParameters.dopplerCentroid."
"dopplerCentroidReferenceTime");
r2_doppler->ref_time_rate = xml_get_double_value(doc,
"product.imageGenerationParameters.dopplerRateValues."
"dopplerRateReferenceTime");
char *dopplerRateStr;
dopplerRateStr = (char *) MALLOC(sizeof(char)*512);
strcpy(dopplerRateStr, xml_get_string_value(doc,
"product.imageGenerationParameters.dopplerRateValues."
"dopplerRateValuesCoefficients"));
r2_doppler->time_first_sample = xml_get_double_value(doc,
"product.imageGenerationParameters.slantRangeToGroundRange."
"slantRangeTimeToFirstRangeSample");
char *p, *q;
p = dopplerCentroidStr;
for (ii=0; ii<numDopplerEstimates; ii++) {
if (ii == 0)
q = p;
else {
if (strchr(p, ' ')) {
q = strchr(p, ' ');
q++;
}
}
sscanf(q, "%lf", &r2_doppler->centroid[ii]);
p = q;
}
FREE(dopplerCentroidStr);
p = dopplerRateStr;
for (ii=0; ii<numDopplerEstimates; ii++) {
if (ii == 0)
q = p;
else {
if (strchr(p, ' ')) {
q = strchr(p, ' ');
q++;
}
}
sscanf(q, "%lf", &r2_doppler->rate[ii]);
p = q;
}
FREE(dopplerRateStr);
// read state vectors
strcpy(radarsat2->zeroDopplerTimeFirstLine, xml_get_string_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"zeroDopplerTimeFirstLine"));
date_terrasar2date(radarsat2->zeroDopplerTimeFirstLine,
&imgStartDate, &imgStartTime);
strcpy(radarsat2->zeroDopplerTimeLastLine, xml_get_string_value(doc,
"product.imageGenerationParameters.sarProcessingInformation."
"zeroDopplerTimeLastLine"));
// Accommodate data stored in reverse time
if (strcmp_case(radarsat2->lineTimeOrdering, "DECREASING") == 0)
date_terrasar2date(radarsat2->zeroDopplerTimeLastLine,
&imgStartDate, &imgStartTime);
// FIXME: determine numStateVector from data - count the entries
//numStateVectors = xml_get_int_value(doc,
// "product.platform.orbit.orbitHeader.numStateVectors");
numStateVectors = 5;
radarsat2->state_vectors = meta_state_vectors_init(numStateVectors);
radarsat2->state_vectors->year = imgStartDate.year;
date_ymd2jd(&imgStartDate, &julianDate);
radarsat2->state_vectors->julDay = julianDate.jd;
radarsat2->state_vectors->second = date_hms2sec(&imgStartTime);
for (ii=0; ii<numStateVectors; ii++) {
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].timeStamp", ii);
strcpy(timeStr, xml_get_string_value(doc, str));
date_terrasar2date(timeStr, &date, &time);
radarsat2->state_vectors->vecs[ii].time =
time_difference(&date, &time, &imgStartDate, &imgStartTime);
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].xPosition", ii);
radarsat2->state_vectors->vecs[ii].vec.pos.x =
xml_get_double_value(doc, str);
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].yPosition", ii);
radarsat2->state_vectors->vecs[ii].vec.pos.y =
xml_get_double_value(doc, str);
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].zPosition", ii);
radarsat2->state_vectors->vecs[ii].vec.pos.z =
xml_get_double_value(doc, str);
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].xVelocity", ii);
radarsat2->state_vectors->vecs[ii].vec.vel.x =
xml_get_double_value(doc, str);
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].yVelocity", ii);
radarsat2->state_vectors->vecs[ii].vec.vel.y =
xml_get_double_value(doc, str);
sprintf(str, "product.sourceAttributes.orbitAndAttitude.orbitInformation."
"stateVector[%d].zVelocity", ii);
radarsat2->state_vectors->vecs[ii].vec.vel.z =
xml_get_double_value(doc, str);
}
// read location information from the tie points
ii = 0;
int line=-99, pixel=-99, found=TRUE;
while (found) {
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].imageCoordinate.line", ii);
line = (int) xml_get_double_value(doc, str);
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].imageCoordinate.pixel", ii);
pixel = (int) xml_get_double_value(doc, str);
if (line < 0 || pixel < 0)
found = FALSE;
if (found) {
if (line == 0 && pixel == 0) {
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"latitude", ii);
radarsat2->sceneCornerCoord1Lat = xml_get_double_value(doc, str);
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"longitude", ii);
radarsat2->sceneCornerCoord1Lon = xml_get_double_value(doc, str);
}
if (line == 0 && pixel == radarsat2->numberOfSamplesPerLine-1) {
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"latitude", ii);
radarsat2->sceneCornerCoord2Lat = xml_get_double_value(doc, str);
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"longitude", ii);
radarsat2->sceneCornerCoord2Lon = xml_get_double_value(doc, str);
}
if (line == radarsat2->numberOfLines-1 && pixel == 0) {
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"latitude", ii);
radarsat2->sceneCornerCoord3Lat = xml_get_double_value(doc, str);
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"longitude", ii);
radarsat2->sceneCornerCoord3Lon = xml_get_double_value(doc, str);
}
if (line == radarsat2->numberOfLines-1 &&
pixel == radarsat2->numberOfSamplesPerLine-1) {
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"latitude", ii);
radarsat2->sceneCornerCoord4Lat = xml_get_double_value(doc, str);
sprintf(str, "product.imageAttributes.geographicInformation."
"geolocationGrid.imageTiePoint[%d].geodeticCoordinate."
"longitude", ii);
radarsat2->sceneCornerCoord4Lon = xml_get_double_value(doc, str);
}
}
ii++;
}
// Read calibration information
if (cal) {
double sample_count = radarsat2->numberOfSamplesPerLine;
attribute = (char *) MALLOC(sizeof(char)*128);
fileName = (char *) MALLOC(sizeof(char)*512);
for (ii=0; ii<3; ii++) {
sprintf(str,
"product.imageAttributes.lookupTable[%d].incidenceAngleCorrection",
ii);
strcpy(attribute, xml_get_string_attribute(doc, str));
sprintf(str, "product.imageAttributes.lookupTable[%d]", ii);
if (strlen(path) > 0)
sprintf(fileName, "%s%s", path, xml_get_string_value(doc, str));
else
strcpy(fileName, xml_get_string_value(doc, str));
if (strcmp_case(attribute, "Beta Nought") == 0)
radarsat2->gains_beta = read_radarsat2_lut(fileName, sample_count);
else if (strcmp_case(attribute, "Sigma Nought") == 0)
radarsat2->gains_sigma = read_radarsat2_lut(fileName, sample_count);
else if (strcmp_case(attribute, "Gamma") == 0)
radarsat2->gains_gamma = read_radarsat2_lut(fileName, sample_count);
}
FREE(attribute);
FREE(fileName);
}
xmlFreeDoc(doc);
xmlCleanupParser();
return radarsat2;
}
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;
}
/***************************************************************
* Ceos_init_stVec:
* Reads state vectors from given CEOS file, writing them in the
* appropriate format to SAR parameters structure.*/
void ceos_init_stVec(const char *fName, ceos_description *ceos,
meta_parameters *meta)
{
struct pos_data_rec ppdr;
/*Fetch platform position data record.*/
get_ppdr(fName,&ppdr);
// Read the state vectors from the leader data file, adjust coordinate system, etc.
// and write them to the SAR parameters structures
ceos_read_stVecs(fName, ceos, meta);
// For ALOS Palsar orbits only
// Don't propagate but select nine state vectors around the center for the
// higher order interpolation scheme
if (ceos->processor == ALOS_PROC) {
// Determine closest state vector
int ii, min;
double diff = 99999999;
for (ii=0; ii<meta->state_vectors->vector_count; ii++) {
if (fabs(meta->state_vectors->vecs[ii].time) < diff) {
diff = fabs(meta->state_vectors->vecs[ii].time);
min = ii;
}
}
// Populate a new state vector
ymd_date img_ymd;
julian_date img_jd;
hms_time img_time;
img_jd.year = meta->state_vectors->year;
img_jd.jd = meta->state_vectors->julDay;
date_sec2hms(meta->state_vectors->second,&img_time);
date_jd2ymd(&img_jd, &img_ymd);
add_time((min-4)*60, &img_ymd, &img_time);
date_ymd2jd(&img_ymd, &img_jd);
meta_state_vectors *new_st = meta_state_vectors_init(9);
new_st->year = img_jd.year;
new_st->julDay = img_jd.jd;
new_st->second = date_hms2sec(&img_time);
for (ii=0; ii<9; ii++)
new_st->vecs[ii] = meta->state_vectors->vecs[ii+min-4];
FREE(meta->state_vectors);
meta->state_vectors = new_st;
// Time shift should definitely set in the code that is calling this function
// meta->sar->time_shift = 0.0;
}
// Propagate three state vectors for regular frames
else if (ceos->processor != PREC && ceos->processor != unknownProcessor) {
int vector_count=3;
double data_int = meta->sar->original_line_count / 2
* fabs(meta->sar->azimuth_time_per_pixel);
meta->state_vectors->vecs[0].time = get_timeDelta(ceos, &ppdr, meta);
if (ceos->processor != PREC && data_int < 360.0) {
while (fabs(data_int) > 15.0) {
data_int /= 2;
vector_count = vector_count*2-1;
}
// propagate three state vectors: start, center, end
propagate_state(meta, vector_count, data_int);
}
}
}
static void sort_input_preference(char **infiles, int n_inputs,
char *preference)
{
int ii, kk;
double lat[n_inputs], lon[n_inputs], sec[n_inputs], sorter[n_inputs];
ymd_date date;
hms_time time;
julian_date jd;
char **tmpfiles = (char **) MALLOC(sizeof(char *)*n_inputs);
asfPrintStatus("Sort input images for preference: %s\n\n", preference);
// Read in metadata
for (ii=0; ii<n_inputs; ii++) {
tmpfiles[ii] = (char *) MALLOC(sizeof(char)*50);
meta_parameters *meta = meta_read(infiles[ii]);
lat[ii] = meta->general->center_latitude;
lon[ii] = meta->general->center_longitude;
parse_DMYdate(meta->general->acquisition_date, &date, &time);
date_ymd2jd(&date, &jd);
sec[ii] = date2sec(&jd, &time);
if (strcmp_case(preference, "north") == 0 ||
strcmp_case(preference, "south") == 0)
sorter[ii] = lat[ii];
else if (strcmp_case(preference, "west") == 0 ||
strcmp_case(preference, "east") == 0)
sorter[ii] = lon[ii];
else if (strcmp_case(preference, "old") == 0 ||
strcmp_case(preference, "new") == 0)
sorter[ii] = sec[ii];
meta_free(meta);
}
// Get on with the sorting business
if (strcmp_case(preference, "south") == 0 ||
strcmp_case(preference, "west") == 0 ||
strcmp_case(preference, "old") == 0)
qsort(sorter, n_inputs, sizeof(double), compare_big_doubles);
else
qsort(sorter, n_inputs, sizeof(double), compare_small_doubles);
// Apply the order to input file list
for (ii=0; ii<n_inputs; ii++) {
for (kk=0; kk<n_inputs; kk++) {
if ((strcmp_case(preference, "north") == 0 ||
strcmp_case(preference, "south") == 0) &&
sorter[ii] == lat[kk])
sprintf(tmpfiles[ii], "%s", infiles[kk]);
else if ((strcmp_case(preference, "east") == 0 ||
strcmp_case(preference, "west") == 0) &&
sorter[ii] == lon[kk])
sprintf(tmpfiles[ii], "%s", infiles[kk]);
else if ((strcmp_case(preference, "old") == 0 ||
strcmp_case(preference, "new") == 0) &&
sorter[ii] == sec[kk])
sprintf(tmpfiles[ii], "%s", infiles[kk]);
}
}
for (ii=0; ii<n_inputs; ii++) {
sprintf(infiles[ii], "%s", tmpfiles[ii]);
//printf("Sorted file[%d]: %s\n", ii+1, infiles[ii]);
}
// Clean up
for (ii=0; ii<n_inputs; ii++)
FREE(tmpfiles[ii]);
FREE(tmpfiles);
}
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;
}
