国产高分三号卫星干涉测量试验  

Interferometric Test Using Domestic GF-3Satellite

作　　者：黄震 赵双明[1] 常青 HUANG Zhen;ZHAO Shuangming;CHANG Qing(School of Remote Sensing Information Engineering,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430079

出　　处：《测绘地理信息》2021年第4期7-11,共5页Journal of Geomatics

基　　金：国家国防科工局高分辨率时地观测系统重大专项(民用部分)(06-Y30F04-9001-20122)。

摘　　要：主要利用国产高分三号(GF-3)卫星数据通过合成孔径雷达干涉测量(interferometric synthetic aperture radar,InSAR)技术提取试验区域数字高程模型(digital elevation model,DEM)。首先介绍了GF-3卫星及其主要成像模式;然后介绍了InSAR数据处理过程及其关键技术,包括基线估计、影像配准、相位解缠等,并介绍其典型算法;最后利用GF-3试验数据提取DEM并对其进行精度评价。试验验证了目前国产SAR(synthetic aperture radar)卫星在干涉成像、干涉测量方面的能力。This paper introduces how to extract DEM in test area via InSAR technology based on image data of domestic GF-3satellite.Firstly,information about GF-3satellite and its main imaging modes is introcuced.Then,principle of In-SAR data processing and its key technologies,such as baseline estimation,image registration,phase unwrapping,et al.are explained.And its typical algorithm is discussed.Finally,GF-3test image data is used to extract DEM in the test area and its accuracy is evaluated.The experiments verify the capability of domestic SAR satellites in interferometric imaging and interferometry.

关 键 词：GF-3 INSAR DEM 基线估计 相位解缠 精度评价 

分 类 号：P237[天文地球—摄影测量与遥感] P208[天文地球—测绘科学与技术]