The PHOTOMOD Radar software is intended for full-scale processing of Earth remote sensing data acquired by spaceborne radars with synthesized antenna aperture (SAR) such as ERS-1/2, Radarsat, SIR-C/X, ENVISAT ASAR, TerraSAR-X, ALOS, COSMO-SkyMed and generation of so called "secondary information products" from SAR images, such as digital elevation models. The fact that SAR is the active sensor makes possible reception of required measurements independently of time, day and weather conditions.