建筑物的高分辨率SAR图像仿真方法  

Very high resolution(VHR) SAR image simulation for buildings

作　　者：任苗苗[1,2] 潘卓 徐向辉[1] 苏海涛[3] REN Miaomiao;PAN Zhuo;XU Xianghui;SU Haitao(Institute of Electronics,Chinese Academy of Sciences,Belting 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;62026 PLA Troops,Xi＇an 710032,China)

机构地区：[1]中国科学院电子学研究所 [2]中国科学院大学 [3]中国人民解放军62026部队

出　　处：《中国科学院大学学报（中英文）》2018年第6期788-794,共7页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(61471340);中国科学院电子学研究所"优秀青年人才计划"基金

摘　　要：提出一种基于建筑物几何特征的高分辨率(VHR) SAR图像仿真方法。该方法首先构建成像场景模型,以改进的光学着色模型近似散射模型;然后在场景间进行射线追踪,得到目标的散射强度信息和位置信息;为使仿真图像更加真实,引入后处理过程;最后经二维成像,得到逼真的建筑物SAR仿真图像。分析和仿真结果表明,该方法准确高效地仿真建筑物在SAR图像中的几何特征和辐射特征,可为理解和解译SAR建筑物图像提供有效的数据支撑。In this study a very high resolution SAR（ VHR SAR） simulation method is proposed based on the geometrical signatures of buildings.Firstly,the imaging scene model is constructed,and an improved Phong Shading model is used as approximate scattering model.Then,the scattering and coordinate information is obtained by tracing rays in the scene.To make the simulation images more realistic,a post process is completed.Finally,a real VHR SAR building image is obtained by two-dimensional imaging.Analysis and simulation results validate that the proposed method describes the geometrical and radiant signatures correctly and efficiently in SAR image.The simulated images provide effective database for understanding SAR images.

关 键 词：SAR图像 图像仿真 几何特征 射线追踪 

分 类 号：TP753[自动化与计算机技术—检测技术与自动化装置]