双基机载雷达几何场景建模及空时杂波特性仿真  

Geometries modeling of bistatic airborne radar and simulation of space-time clutter characteristics

作　　者：段锐[1] 汪学刚[1] 陈祝明[1] 江朝抒[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《电子测量与仪器学报》2009年第2期32-38,共7页Journal of Electronic Measurement and Instrumentation

基　　金：国防预研基金(编号:51407020304DZ0223)资助项目

摘　　要：由于双基机载雷达具有2个独立的运动平台,双基杂波建模是一项十分困难的工作。本文提出利用坐标系统变换的方法建立双基机载雷达场景的几何模型,不仅简化了双基几何场景的数学描述,还可方便准确地表示双基杂波的距离/角度-多普勒频率特性及计算杂波的空时二维似然谱。该模型可用于评估双基空时自适应处理(STAP)和杂波抑制技术实际杂波环境中的性能。最后,采用多通道机载雷达实验(MCARM)和指定雷达场景的双基几何配置参数得到的仿真结果验证了该模型的正确性。For possessing two separately moving platforms of the bistatic airborne radar, bistatic clutter modeling is an extremely burdensome work. In this paper, a coordinate system transforming method is initiated into the geometries modeling of bistatic airborne radar, which can not only simplify the mathematical formulation of bistatic geometrical scenarios but also accurately and conveniently represent the range/angle-Doppler characteristics of bistatic clutter, and calculate the space-time likelihood clutter spectra. The model can be used to evaluate the performance of bistatic STAP algorithms and clutter suppression techniques in practical clutter environments. Finally, the simulation results validate the proposed model by using the bistatic configuration parameters of Multi-Channel Airborne Radar Measurement （MCARM） experiment and the simulated bistatic scenario.

关 键 词：双基机载雷达 杂波建模 双基几何关系 空时自适应处理 

分 类 号：TN95[电子电信—信号与信息处理]