基于电磁散射特性计算的目标SAR图像仿真  

Simulation of SAR Imagery of Target Based on Electromagnetic Scattering Characteristic Computation

作　　者：李仁杰[1] 计科峰[1] 邹焕新[1] 周石琳[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《雷达科学与技术》2010年第5期395-400,405,共7页Radar Science and Technology

摘　　要：目标SAR图像仿真对SAR系统设计与验证、SAR图像几何纠正与地理编码、SAR图像解译和目标识别以及SAR成像处理等具有重要意义。SAR图像仿真总体分为基于信号的仿真和基于特征的仿真,不同应用决定了其相应的仿真方法也各不相同。面向SAR图像解译与目标识别应用,采用基于信号的仿真,研究实现了基于电磁散射特性计算的目标SAR图像仿真,给出了仿真信号的数学模型及仿真流程,并通过简单几何体以及实际目标的SAR图像仿真实验结果验证了其有效性。Simulation of SAR imagery of target is significant for SAR system design and verification,SAR image geometric rectification and geocoding,SAR imagery interpretation and target recognition,SAR imaging processing,etc.Simulations of SAR imagery include raw data based simulation and feature based simulation.Different applications of SAR imagery simulations lead to different simulation methods.Oriented to SAR image-ry interpretation and target recognition,this paper studies and implements the simulation of SAR imagery of tar-get based on electromagnetic scattering characteristic computation using the first method,and presents the mathematical model of raw data and the simulation process.The availability of the simulation by simulating SAR imagery of simple object and real target is also tested.

关 键 词：合成孔径雷达(SAR) SAR图像仿真 电磁散射 距离-多普勒算法 

分 类 号：TN958[电子电信—信号与信息处理] TN957[电子电信—信息与通信工程]