Accuracy comparison of Differential Interferometric Synthetic Aperture Radar using LiDAR Digital Elevation Model

This paper describes about accuracy of differential interferometric synthetic aperture radar (DInSAR) using different resolutions of external digital elevation models from ERS-1/2, STRM, LiDAR. For DInSAR technique, external DEMs have to have correct surface information. Typical DInSAR processes used the space-bone SAR data such as SRTM, ERS-1/2, JERS, and RADARSAT. However, they did not remove the vegetation and non-terrain feature. It is the cause of errors in final result using non-correct DEM. For improved accuracy of DInSAR results, in this paper, LiDAR DEM which has high spatial resolution with removed non-terrain data is used and compare with other DEMs.