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应用科学学报 ›› 2011, Vol. 29 ›› Issue (6): 571-576.doi: 10.3969/j.issn.0255-8297.2011.06.004

• 信号与信息处理 • 上一篇    下一篇

零点约束的MIMO雷达最小二乘误差方向图合成

张宇， 王建新   

  1. 南京理工大学电子工程与光电技术学院，南京210094
  • 收稿日期:2010-07-01 修回日期:2010-12-28 出版日期:2011-11-30 发布日期:2011-11-28
  • 通信作者: 张宇，博士生，研究方向：雷达波形设计与信号处理，E-mail: zhangyu7_7@hotmail.com；王建新，教授，博导，研究方向：雷达信号与信息处理、软件无线电，E-mail: wangjxin@mail.njust.edu.cn
  • 作者简介:张宇，博士生，研究方向：雷达波形设计与信号处理，E-mail: zhangyu7_7@hotmail.com；王建新，教授，博导，研究方向：雷达信号与信息处理、软件无线电，E-mail: wangjxin@mail.njust.edu.cn

Least Square Error Synthesis with Nulls for MIMO Radar Beam Pattern

  1. School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2010-07-01 Revised:2010-12-28 Online:2011-11-30 Published:2011-11-28

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1115

被引次数

2

摘要：

摘要： 对于MIMO雷达，当发射和接收天线间距满足特定值时，发射方向图中会出现栅瓣，导致合成的方向图中出现高旁瓣. 文中从数学角度分析了旁瓣产生的原因，提出一种零点约束的最小二乘方向图合成方法以抑制旁瓣. 该方法由拉格朗日乘子方法得到具有零点约束的最优加权，然后合成最小二乘误差接收方向图来解决高旁瓣问题. 仿真结果表明，合成的方向图中高旁瓣能被有效抑制.

关键词: 多输入多输出, 雷达, 最小二乘误差, 方向图合成

Abstract:

For multi-input multi-output(MIMO) radars, grating lobes appear in the transmitting pattern when the spacing between transmitting antennas and that between receiving antennas are related with some particular values. In this case, high sidelobes occur in the synthetic pattern obtained by multiplying the transmitting pattern with the receiving pattern. This paper analyzes the cause of high sidelobes mathematically, and proposes a novel algorithm that can synthesize a least square error (LSE) receiving pattern with nulls to suppress high sidelobes for MIMO radar. The optimum weighting with nulls is obtained with the Lagrange multiplier method. The LSE receiving pattern is synthesized to solve the high sidelobe problem. Simulation results verify that high sidelobes in the synthesized pattern can effectively be suppressed using the obtained weightings.

Key words: multi-input multi-output(MIMO), radar, least square error (LSE), pattern synthesis

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