English

应用科学学报 ›› 2012, Vol. 30 ›› Issue (3): 270-274.doi: 10.3969/j.issn.0255-8297.2012.03.009

• 论文 • 上一篇    下一篇

双基地MIMO雷达二维DOD和二维DOA联合估计

许凌云， 张小飞， 许宗泽   

  1. 南京航空航天大学电子信息工程学院，南京210016
  • 收稿日期:2011-04-23 修回日期:2011-09-20 出版日期:2012-05-30 发布日期:2012-05-30
  • 基金资助:

    国家自然科学基金(No.60801052)；南京航空航天大学理工科融合专项基金(No.NP2011036)资助

Joint 2D-DOD and 2D-DOA Estimation in Bistatic MIMO Radar

XU Ling-yun, ZHANG Xiao-fei, XU Zong-ze   

  1. College of Electronic Information Engineering,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China  
  • Received:2011-04-23 Revised:2011-09-20 Online:2012-05-30 Published:2012-05-30
  • Supported by:

    许凌云，博士，讲师，研究方向：阵列信号处理，E-mail: xl_yun@163.com；许宗泽，教授，博导，研究方向：通信信号处理，E-mail：xzzem@yahoo.com

PDF

1343

被引次数

12

摘要：

提出一种双基地MIMO雷达L型阵列下多维角度联合估计的新算法. 该算法利用匹配滤波器输出信号特点构造不同的代价函数，采用迭代最小二乘算法估计收发阵列流形矩阵，根据L 型阵列结构的特点和最小二乘法，从估计出的矩阵中计算目标的二维DOD(direction of departure)和二维DOA(direction of arrival). 该方法无需谱峰搜索，可实现参数的同时估计与配对. 与ESPRIT 算法相比，具有更高的估计精度，并接近于克拉美-罗下限，且在小快拍数下也能较好地工作. 仿真结果验证了该算法的有效性.

关键词: 迭代最小二乘算法, 多维角度估计, 双基地MIMO雷达, L 型阵列

Abstract:

A new algorithm for multi-angle estimation in bistatic MIMO radar with an L-shaped array is presented. According to the characteristics of received signals, different cost functions are constructed. The transmitting and receiving array matrices are obtained using an iterative least square algorithm. Using a structure of L-shaped array and the least square method, the 2D-DOA and 2D-DOD of multi-target involved in the receiving array from the target to the transmitter and receiver can be estimated based on the decomposed matrices. The method does not need to search spectral peaks or pair parameters. In comparison with the ESPRIT method, the proposed algorithm has high precision in the parameter estimation, which is close to the
Cramer-Rao bound. It can works well in small sizes. Simulation results verify its effectiveness.

Key words: iterative least square algorithm, multidimensional angle estimation, bistatic MIMO radar, L-shaped array

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