基于相干法与非相干法的SAR图像仿真  

Computer Simulation of SAR Images of Ground Targets Based on Coherent Method and Incoherent Method

作　　者：陆军[1] 蒋咏梅[1] 赵凌君[1] 匡纲要[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《现代雷达》2010年第10期91-95,共5页Modern Radar

摘　　要：地面目标合成孔径雷达图像仿真方法可分为相干法与非相干法2类,相干法能表现出目标的电磁散射特征但阴影特征缺失,非相干法对目标的几何与阴影特征表现较好但其表现电磁散射特性的能力欠佳。文中在分析了上述2类方法特点互补性后提出了一种新的仿真方法,新方法所得合成孔径雷达仿真图像能同时表现目标电磁散射特征和阴影特征,与同参数条件下实测图像更为相似。Computer simulation of SAR Images of ground targets are classified as coherent method and Incoherent method.The targets＇ backscattering characteristics can be represented by coherent method,but targets＇ shadows is not showed completely.On the contrary,the targets＇ geometry features and shadows can be represented by incoherent method,but backscattering characteristics of target B not showed.Then a new simulation way is proposed.It can provide better SAR simulation images which represent both electromagnetic scattering features and shadow features of the ground targets,and which are more similar to the true SAR images of the same target in the same parameter condition.

关 键 词：合成孔径雷达 仿真 阴影特征 电磁散射特征 

分 类 号：TN955[电子电信—信号与信息处理]