High-resolution airborne SAR interferometry mapping application in Huashan mountain

Interferometric synthetic aperture radar (SAR) data offer the opportunity to map the western area of China, acquired from the first Chinese multi-modes airborne SAR mapping system. DEM could be obtained through airborne interferometric pairs. Furthermore, the quality of the InSAR DEM may vary significantly depending on the local topography. Aims of the approach are to smooth the noisy InSAR data, to merge the different directions DEM from the complementary interferometric pairs, to eliminate effectively spurious terrain surface points, to generate an improved 3-D visualization of the InSAR DEM scene and finally to meet DEM product accuracy requirement based on the different topography condition with a scale of 1:50,000.