High Quality Ortho-rectification Production for High Resolution SAR Image
高分辨率SAR正射影像制作精度控制

To get accurate Ortho-SAR image,it is important to keep the same precision for GCP and DEM data in the process of Ortho-rectification.How to select reliable Ground Control Point (GCP) and control the precision of Ortho-model is discussed in this paper.The conclusions are drawn by comparing different Ortho-rectification process which was using Fine1 to Fine5 mode Radarsat-1 SAR images of same region and 140 GCPs gotten by GPS surveying.Some advices for processing SAR image Ortho-rectification are given at last.