SAR图像几何特征的仿真  

The Geometrical Distortions Simulation of SAR Image

作　　者：孙尽尧[1] 孙洪[1] 

机构地区：[1]武汉大学电子与信息学院,湖北武汉430079

出　　处：《系统仿真学报》2004年第10期2313-2316,共4页Journal of System Simulation

基　　金：国家自然科学基金资助项目(60072041)

摘　　要：合成孔径雷达(SAR)图像由于其特有的几何畸变和斑点噪声的影响,给图像定位和解译造成许多困难,而通过仿真方法研究其几何影响可为SAR图像研究提供有力的工具。该文研究了合成孔径雷达图像(SAR)几何特征的仿真。首先研究了SAR图像的几何影响:透视收缩(foreshortening)、掩叠(layover)和阴影(shadow)。然后,提出了SAR图像几何畸变和斑点噪声(speckle)的仿真方法,并给出了计算机仿真山地、建筑物和车辆的SAR图像。最后,讨论了SAR图像几何仿真的一些应用。There are many difficulties in the location and interpretation of synthetic aperture radar (SAR) images because of their particular geometrical distortions and speckle. The geometrical distortions seen in SAR images are discussed in the paper. First, we show the main geometrical distortions that are called “foreshortening”, “layover” and“shadow”. Next, we present our approach of SAR simulation lying emphasis on the geometrical distortions and the speckle and then give the simulating results of a terrain, buildings and vehicle. Finally, we discuss some applications of simulated products.

关 键 词：合成孔径雷达(SAR) 几何畸变 斑点噪声 计算机仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]