利用后向散射特性从高分辨率SAR影像中提取建筑物高度  

Investigation on Building Height Extraction via Radar Backscattering Characteristics in High Resolution SAR Images

作　　者：刘康[1] Timo Balz 廖明生[2] 

机构地区：[1]武汉大学电子信息学院,武汉市珞喻路129号430079 [2]武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2012年第7期806-809,共4页Geomatics and Information Science of Wuhan University

基　　金：国家重点基础研究发展规划资助项目(2007CB714405);国家自然科学基金资助项目(41021061)

摘　　要：研究了一种基于雷达后向散射特性,从单张星载高分辨率SAR影像提取建筑物高度的方法。该方法通过检测建筑物二次散射强度,同时获取目标方位角、入射角等参数以及相关介质特性等信息,根据后向散射几何光学模型估算建筑物高度。实验验证了对于相当一部分典型建筑物都能够获得较为理想的高程估计值,进而证明了该方法提取建筑物高度的可行性和有效性。Building characteristic information, especially building height extraction, is of great significance in urban remote sensing application. A method for building height determination via radar backscattering characteristics is studied, using only one spaeeborne high-resolution SAR image. The building height can be evaluated by the strength of the doublebounce backscattering of a building,looking angle, orbit, and material parameters based on the geometrical optics （GO） backscattering model. The approach provides good results for typical buildings, indicating the validity of the proposed method. With the continuous development of high resolution SAR system, there are various possible applications in urban building characteristic extraction.

关 键 词：合成孔径雷达 后向散射特性 二次散射 高度提取 

分 类 号：P237.9[天文地球—摄影测量与遥感]