针对无控制点情况下星载SAR地面目标高精度定位问题,提出在整个成像条带中任选一景SAR影像,并基于全球DEM数据生成模拟的SAR影像,然后通过自动或半自动匹配方式寻找一个控制点,修正整个条带的轨道参数,从而消除了系统误差的影响,提高了整个SAR条带影像的定位精度。
A method is put forward to determine the accurate location of ground targets in a SAR imagery.This method utilizes a feature point produced by automatic or semi-automatic image matching to improve the whole SAR strip imagery location accuracy based on the stimulant SAR imagery generated by the global DEM data.Tests indicate that the method is effective and feasible.