合成孔径雷达(SAR)实时成像仿真研究

进行合成孔径雷达（SAR）成像仿真是研究成像雷达的一个重要手段。该文在分析SAR成像仿真机理的基础亡，提出了一种利用视景仿真软件Vega进行SAR实时成像的仿真方法。该方法在建立场景模型的基础卜，利fEH场景纹理材料的物理属性数据及雷达参数计算雷达散射截面（RCS），再把RCS值输入一个能模拟雷达真实设备的传感器模型，就得到SAR实时仿真图像。为了满足SAR成像仿真的需求，对Vega软件中的纹理材料数据库文件进行了修改，建立了新的纹理材料数据库文件。仿真结果表明新方法能较好地满足SAR实时成像仿真需求，有助于促进SAR成像实时仿真技术的发展。

Simulation of Real-time Imaging Synthetic Aperture Radar (SAR)

Simulation of synthetic aperture radar(SAR) is an important means for studying the imaging radar.Based on the analysis of SAR's imaging simulation principle,a method of SAR's real-time imaging simulation is given with scene simulation software Vega.This method is based on the foundation of scene model,and uses the physical attribute data and the radar parameters of the texture materials of scene model to count the radar cross section(RCS).Then RCS's value is imported into a sensor model that can simulate the true equipment of radar,and get SAR's real-time picture of simulation based on Vega.In order to meet the requirement of SAR's image simulation,texture materials database files in Vega are modified.The new texture materials database files are built.The simulation result indicates that the new method can meet the need of SAR's real-time imaging simulation, and promote the development of SAR's real-time imaging simulation technology.