全极化沿航虚拟多基线干涉SAR动目标检测性能分析  

Global Moving Target Detection Performance Analysis for Virtual Multi-baseline of the Fully Polarimetric Along-track Interferometric SAR System

作　　者：李廷伟[1] 梁甸农[1] 朱炬波[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：《信号处理》2009年第6期895-899,共5页Journal of Signal Processing

摘　　要：提出利用全极化雷达交替发射同时接收方式的虚拟基线,结合实际存在的基线,组合出三条新的虚拟基线,文中详细阐述了三条虚拟基线的物理意义,并分析这三条虚拟基线在提高动目标检测性能方面的潜能。与传统的单基线干涉SAR系统相比,基于全极化干涉SAR系统产生的虚拟基线,可以获得更优的最小可检测速度、最大不模糊可测速度,更广的测速范围,而且还具有速度解模糊能力。仿真结果验证了上述结论的正确性。Aiming at the Fully Polarimetric Along-track Interferometric SAR System, the paper constructs three new virtual base- lines basing on the real lnterferometric baseline and the virtual baseline of the fully Polarimetric SAR system that works in the way of transmitting simultaneously and receiving alternately. We expatiate the physical meaning and constructions of three new virtual base- lines, moreover, we analyze their potentials in moving target detection. The analytical results shows that the virtual baselines help to get better minimum detectable velocity, better maximum unambiguous detectable velocity and larger range of detectable velocity, at the same time, they also have the ability to solve the velocity ambiguity. Simulation results validate the validity of above-mentioned conclusions.

关 键 词：干涉SAR 极化SAR 动目标检测 互易理论 

分 类 号：TN957[电子电信—信号与信息处理]