A REVIEW REPORT ON NOISE REDUCTION OF HIGH -RESOLUTION SAR IMAGE OVER VEGETATION AND URBAN AREAS

Abstract: Synthetic Aperture Radar (SAR) has been widely used in many civilian and military applications, and the SAR with moving targets indication is a very hot topic in recent years. As many literatures discussed, if the returns from moving targets are processed in the same way as the stationary returns, the moving target will appears as an azimuth shift due to range motion and the image of the target will be smeared in the azimuth direction due to azimuth motion .The high-resolution interferograms over vegetation or urban areas are heterogeneous, which will violate the local stationarity assumption and make it difficult to obtain a large number of independent and identically distributed samples for interferometric noise suppression.

Keywords: SAR (Synthetic Aperture Radar), DEMs (Digital Elevation Models), I.I.P (Independent and Identically Distributed)