一种SAR/GMTI空频联合处理杂波抑制技术的研究  

Research on a Space-Frequency Processing for SAR/GMTI

作　　者：盛蔚[1] 毛士艺[2] 

机构地区：[1]北京航空航天大学第五研究室,北京100083 [2]北京航空航天大学203教研室,北京100083

出　　处：《电子学报》2005年第6期970-973,共4页Acta Electronica Sinica

摘　　要：本文针对一种距离多普勒域沿迹干涉主瓣杂波抑制技术进行研究:首先指出本文研究方法与传统主瓣杂波抑制技术DPCA-最大的不同在于前者是空频联合处理,后者是空时联合处理,并给出距离多普勒域沿迹干涉算法的空频二维滤波器形式;其次,本文分析了影响沿迹干涉法杂波抑制能力的固有相位补偿误差和通道匹配误差,并通过仿真分析了固有相位补偿误差和系统参数的关系;第三,本文研究了RDATI杂波抑制处理对运动目标回波的影响,运动目标保留程度与系统参数及目标参数的关系,为进一步检测运动目标、估计运动目标参数打下基础.SAR/GMTI is one of the stresses in SAR field. Crucial technique for SAR/GMTT is suppressing the main beam clutter, for the ground-moving target echo is often shaded by main beam clutter (echo from stationary background). First we point out the difference between clutter-suppression method studied (called RDATI) and the traditional SAR/GMTI algorithms (called DPCA), the former is space-frequency processing and the latter is space-time processing. Space-Frequency filter for RDATI is given out. Next we analyze the system parameters that will influence the clutter residue after RDATI suppression. In the third part we analyze the principle and the degree that moving targets echo can be retained after RDATI processing.

关 键 词：合成孔径雷达 地面运动目标检测 沿迹干涉 空频联合处理 相位补偿误差 

分 类 号：TN959.73[电子电信—信号与信息处理]