Improvement of ScanSAR interferometric processing

ScanSAR ScanSAR differential interferometric technique is a very powerful tool in order to detect the wide crustal deformation caused by huge earthquakes. We tried to detect the crustal deformation caused by 2011 Japan Tohoku earthquake (March 11 2011, Mw 9.0) using the data of ALOS/PALSAR ScanSAR mode. We processed ScanSAR interferometry based on full aperture imaging method [1]. However, only poor interferogram was obtained, because of severe interferometric conditions and the steep terrain in processing area. In order to improve interferometric quality, we tried the interferometric processing using the time-domain back projection approach, and range and azimuth filtering. In this paper, the result of ScanSAR ScanSAR interferometry based on time-domain back projection method is reported.