基于R-D模型的星载SAR影像直接目标定位  

On the R-D Model Based Geolocation of Spaceborne SAR Imagery

作　　者：吴颖丹[1] 

机构地区：[1]湖北工业大学理学院,湖北武汉430068

出　　处：《湖北工业大学学报》2012年第5期40-44,共5页Journal of Hubei University of Technology

摘　　要：针对星载合成孔径雷达对地目标的定位问题,分析了仅利用元数据中的相关参数,根据距离-多普勒模型和地球模型进行对地定位的理论和不同计算方法.系统地提出将现有的基于R-D模型的不同解算方法分为解析和迭代两大类,并对各算法加以介绍和验证,对定位精度作了详尽的比较分析.试验证实了基于R-D模型的两类解算方法的正确性,及其在SAR影像对地目标定位中很好的应用前景.For the issue of space-borne synthetic aperture radar（SAR） imagery target geo-location,the paper firstly introduced the principle of Range-Doppler（R-D） model and analyzed different methods according to R-D model and earth ellipsoid model,only using parameters from metadata.It then classified the above methods into two classes systematically： analytical and iterative methods.Finally,all the algorithms were introduced in details and verified,and their position accuracy was elaborately analyzed.The results of experiment indicate that these two types of geo-location algorithm based on R-D model are correct,and have good prospect of application.

关 键 词：星载SAR影像 R-D模型 目标定位 解析 迭代 精度 

分 类 号：P23[天文地球—摄影测量与遥感]