基于双L阵的双基地MIMO雷达多目标角度估计

摘要

A new method for multi-target localization in bistatic multiple-input multiple-output (MIMO) radar system with double L-shape arrays is presented.The rotation invariant matrices of elevation and azimuth both for transmiting and receiving arrays are exploited by using the estimation of signal parameters via rotational invariance techniques (ESPRIT method).By constructing the two complex matrices,transmiting and receiving angles can be estimated through automatically pairing from the imaginary part and real part of each complex matrices' eigenvalue.Moreover,the Cramer-Rao bound (CRB) of the presented MIMO radar signal model is derived.The effectiveness of the proposed method is verified by simulation.%提出了发射和接收均为L阵配置下的双基地MIMO雷达多目标角度估计的方法.基于ESPRIT算法,分别提取出发射、接收端的方位和俯仰旋转不变因子,构造了2个配对复矩阵并对其特征分解,根据特征值的实部和虚部分别估计出发射方位和俯仰角,接收方位和俯仰角,并实现了各角度间的自动配对.推导了双L阵配置下双基地MIMO雷达角度估计的克拉美罗界.仿真结果验证了本文算法的有效性.