一种直接回波数据域雷达自适应通道均衡方法  

Adaptive radar channel equalization approach in the echo data domain

作　　者：刘向阳[1,2] 廖桂生[1] 朱圣棋[1] 毛志杰[1,2] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,陕西西安710071 [2]西安通信学院军事综合信息网教研室,陕西西安710106

出　　处：《西安电子科技大学学报》2010年第2期210-217,共8页Journal of Xidian University

基　　金：国家自然科学基金资助项目(60736009;60825104)

摘　　要：在实际的机载多通道地面运动目标检测(GMTI)系统中,通道失配误差的存在降低了地杂波的抑制性能,进而影响了弱运动目标的检测.为了补偿通道间的失配误差,提出了一种基于地杂波数据的通道均衡方法.该方法根据机载多通道雷达地杂波信号的特性,利用维纳滤波技术估计并补偿了该失配误差,不需要改装现有的雷达设备.其次分析了在有限样本下该方法的性能与地杂波信号相关系数的关系,并利用实测数据实验验证了该方法的有效性.In the actual airborne multi-channel GMTI system,the mismatch error exists in different channels and degrades the capability of repression for the ground clutter,thus affecting the detection of weak moving targets.To deal with this problem,a novel channel equalization approach based on the ground clutter data is presented.In this method,according to the characteristic of the ground clutter for multi-channel radar,the wiener filter technique is applied to evaluate and compensate the mismatch errors,without refitting the radar equipments in use.Then the relationship between the performance and the correlation coefficient of the ground clutter signal is analyzed in the situation of limited samples.Finally,the effectiveness of the method proposed is validated by measured data.

关 键 词：通道均衡 失配误差补偿 GMTI 杂波抑制 

分 类 号：TN957[电子电信—信号与信息处理]