天基雷达空时二维杂波建模与STAP性能分析  

Space-time Two-dimensional Clutter Modeling and Peformance Analysis of STAP for Space-based Radar

作　　者：于鹏[1] 江朝抒[1] 

机构地区：[1]电子科技大学电子工程学院,成都611731

出　　处：《现代雷达》2011年第3期29-33,共5页Modern Radar

基　　金：国防预研基金项目资助

摘　　要：提出了一种基于天基雷达运动几何模型的空时二维杂波的建模方法。该模型考虑了地球自转的影响以及天基雷达杂波的距离和多普勒模糊特征,克服了传统一维杂波建模方法难以描述天基雷达空时二维特征的缺陷,而且该建模方法运算量低,适于对天基雷达大范围杂波进行快速模拟。同时,利用该模型得到了仿真杂波数据,研究了地球自转和杂波的距离多普勒模糊对空时二维自适应处理的动目标检测性能的影响,仿真和处理结果验证了杂波模型的正确性。A space-time two-dimensional modeling method of clutter for space-based radar based on a geometric model of movement is presented in this paper. The effects of the earth＇s rotation and the clutter＇s range Doppler ambiguity have been considered in the model, which is helpful to overcome the defect that the traditional one-dimensional modeling method is hard to describe clutter＇s two-dimensional characteristics. Meanwhile, the modeling has a low computation and is suitable for clutter＇s quick simulation with a wide range. Based on this, with the clutter simulation data, the effects of earht＇s rotation and range doppler ambiguity on moving target detection have been studied using space-time adative processing（STAP）. Simulation and processing results proved the correctness of clutter modeling.

关 键 词：杂波建模 距离多普勒模糊 空时二维自适应处理 

分 类 号：TN957.51[电子电信—信号与信息处理]