基于DEM的SAR图像模拟

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英文篇名：Generation of SAR Simulation Image from DEM 中文刊名：测绘科学技术学报 英文刊名：Journal of Geomatics Science and Technology 作者：刘智 ; 张永贺 ; 王冬红 ; 宋芳 英文作者：LIU Zhi1 ; ZHANG Yong-he2 ; WANG Dong-hong1 ; SONG Fang3(1.Institute of Surveying and Mapping ; Information Engineering University ; Zhengzhou 450052 ; China ; 2.Intelligence Institute of Airforce's Equipment Academy ; Beijing 100085 ; China ; 3.72946 Troops ; Zibo 255000 ; China) 中文关键词：合成孔径雷达 ; 数字高程模型 ; 图像模拟 ; 小面单元模型 ; 阴影 英文关键词：synthetic aperture radar(SAR) ; digital elevation model ; image simulation ; facet model ; shadow 出版日期：2008-10-15 机构：信息工程大学测绘学院;空军装备研究院;72946部队; 年：2008 期：05 出版单位：测绘科学技术学报

摘要

针对SAR图像模拟方法进行了深入研究,提出了一种新的SAR图像模拟方法。该方法引入并改进信号模拟中经常使用的小面单元模型,并对SAR图像的阴影特征进行了分析;给出了一种高效判断阴影区域的算法。使用该方法对某一山地区域的DEM数据进行了SAR图像的模拟实验。实验结果表明:模拟的SAR图像和真实SAR图像纹理一致,很好地反映了起伏地区SAR图像的几何特征,取得了理想的效果。
SAR image simulation methods were studied in this paper.A new simulation method was proposed.This method not only imported and improved the facet model which was usually used in SAR signal simulation method,but also studied shadow features of SAR image and gave an efficient method of judging shadow regions.This method was used to simulate a mountainous region based on its DEM.The simulated results demonstrated that the textures of the simulated image were same with the real SAR image's,and the simulated image perfectly reflected the special geometric distortion features of mountainous region's SAR image.

引文

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