空间色噪声环境下双基地MIMO雷达角度和多普勒频率联合估计方法  

Joint Estimation of Angle and Doppler Frequency for Bistatic MIMO Radar in Spatial Colored Noise

作　　者：符渭波[1] 苏涛[1] 赵永波[1] 何学辉[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《电子与信息学报》2011年第12期2858-2862,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60902079)资助课题

摘　　要：该文提出了一种空间色噪声环境下双基地MIMO雷达角度和多普勒频率的联合估计方法。该方法利用相邻时刻匹配滤波器输出的互相关矩阵构造新矩阵,消除了空间色噪声的影响,通过对其进行奇异值分解(SVD)获得信号子空间,然后将相邻时刻匹配滤波器输出的时间相位差作为时间旋转因子,采用ESPRIT方法获得目标多普勒频率、波离方向(DOD)和波达方向(DOA)的联合估计。该方法没有阵列孔径损失,且所估计参数能够实现自动配对。计算机仿真验证了该方法的有效性。A method of joint estimation of angle and Doppler frequency for bistatic MIMO radar in spatial colored noise is presented. Utilizing the cross-correlation matrix which is formed by the adjacent outputs of match filters in the time domain, a new matrix is constructed to eliminate the influence of spatial colored noise, and the signal subspace is obtained from Singular Value Decomposition （SVD） of it. Then angles and Doppler frequencies can be estimated based on ESPRIT using the rotational factor produced by adjacent outputs of match filters. In this method, angles and Doppler frequencies can be obtained simultaneously and automatically paired without array aperture loss. Numerical results verify the effectiveness of the proposed method.

关 键 词：双基地MIMO雷达 空间色噪声 奇异值分解(SVD) ESPRIT 

分 类 号：TN957.51[电子电信—信号与信息处理]