/**
* This method copies selected tie point grids to a downscaled target product
*
* @param sourceProduct - the source product
* @param targetProduct - the target product
* @param scalingFactor - factor of downscaling
*/
public static void copyDownscaledTiePointGrids(
Product sourceProduct, Product targetProduct, float scalingFactor) {
// Add tie point grids for sun/view zenith/azimuths. Get data from AATSR bands.
final Band szaBand =
sourceProduct.getBand("sun_elev_nadir_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band saaBand =
sourceProduct.getBand("sun_azimuth_nadir_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band latitudeBand =
sourceProduct.getBand("latitude_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band longitudeBand =
sourceProduct.getBand("longitude_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band altitudeBand =
sourceProduct.getBand("altitude_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band szaDownscaledBand = downscaleBand(szaBand, scalingFactor);
final Band saaDownscaledBand = downscaleBand(saaBand, scalingFactor);
final Band latitudeDownscaledBand = downscaleBand(latitudeBand, scalingFactor);
final Band longitudeDownscaledBand = downscaleBand(longitudeBand, scalingFactor);
final Band altitudeDownscaledBand = downscaleBand(altitudeBand, scalingFactor);
addTpg(targetProduct, szaDownscaledBand, "sun_zenith");
addTpg(targetProduct, saaDownscaledBand, "sun_azimuth");
// unscaled latitude/longitude TPGs were added by 'copyGeoCoding', we have to remove them before
// downscaling
targetProduct.removeTiePointGrid(targetProduct.getTiePointGrid("latitude"));
targetProduct.removeTiePointGrid(targetProduct.getTiePointGrid("longitude"));
addTpg(targetProduct, latitudeDownscaledBand, "latitude");
addTpg(targetProduct, longitudeDownscaledBand, "longitude");
addTpg(targetProduct, altitudeDownscaledBand, "altitude");
}
