摘要
建立了双基地多输入多输出(multiple input multiple output,MIMO)雷达信号模型,提出了一种目标发射角、接收角及多普勒频率联合估计方法。通过对接收数据协方差矩阵进行特征值分解估计目标个数,根据目标数构造空时矩阵,对所构造矩阵进行特征值分解,即可得到雷达目标多个参数的闭式解。该方法针对不同目标数的情况进行了讨论,所构造空时矩阵的维数较小,并且避免了多维非线性的谱峰搜索,还可实现自动配对,算法复杂度较低。仿真结果证明了所提算法的有效性。
This paper sets up a signal model of bistatic M1MO radar, and proposes an algorithm for joint direction of alTival- direction of departure and Doppler frequency estimation. Firstly, the proposed method can get the number of targets by u- sing eigenvalue decomposition to the covariance matrix of received data. Secondly, it defines a space-time matrix according to the acquired number. Then it can get closed-form solutions of the multi-target parameters by using eigenvalue decomposi- tion. The method has discussed different situations of different number of targets, the dimension of the space-time matrix is smaller. In addition, the multi-dimensional nonlinear peak search is avoided, and the pairing of the parameters is automati- cally obtained. So the degree of complexity of the algorithm is lower. The simulation results show the effectiveness of the proposed algorithm.
出处
《重庆邮电大学学报（自然科学版）》
CSCD
北大核心
2013年第6期748-752,共5页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
重庆邮电大学研究生教育创新计划重点项目(Y201019)
重庆市教委科研项目(KJ090513)~~
