一种新的干涉SAR解相位模糊方法

结合局部Radon变换,提出了基于等相位路径搜索的干涉SAR解相位模糊的方法,并且通过设立参考地形相位,对原相位进行修正。该方法具有良好的稳定性和较小的误差,且无误差传递,因而是一种切实可行的解相位模糊方法。利用三峡地区的L波段的SIR-C的并行轨道数据,得到了局部区域的相对地形高度信息图。

A New Method for Phase Unwrapping of Interferometric SAR

Phase unwrapping is an important step in interferometric synthetic aperture radar(INSAR).By using local Radon transform,this paper put forwards a kind of method for phase unwrapping of INSAR which based on the same phase path searching.A method for phase correcting by setting reference phase of the ground is also given.The method given in this paper has the advantages of stability and less error,which is very useful and realistic in phase unwrapping.By using the L band data of SIR-C of the Three-Gorgess area of China,the local DEM(digital elevation map) is obtained.