J4 ›› 2010, Vol. 37 ›› Issue (1): 86-90.doi: 10.3969/j.issn.1001-2400.2010.01.015

• 研究论文 • 上一篇    下一篇

阵元利用率最高的MIMO雷达阵列结构优化算法

张娟;张林让;刘楠   

  1. (西安电子科技大学 雷达信号处理重点实验室,陕西 西安  710071)
  • 收稿日期:2009-04-10 出版日期:2010-02-20 发布日期:2010-03-29
  • 通讯作者: 张娟
  • 作者简介:张娟(1979-),女,讲师,西安电子科技大学博士研究生,E-mail: jzhang@xidian.edu.cn.
  • 基金资助:

    重点实验室基金课题资助项目(9140C0105010703)

Array optimization algorithm for MIMO radar with a  maximum physical sensors efficiency

ZHANG Juan;ZHANG Lin-rang;LIU Nan   

  1. (Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2009-04-10 Online:2010-02-20 Published:2010-03-29
  • Contact: ZHANG Juan

摘要:

提出了一种多输入多输出雷达阵列结构优化新算法.首先要求在实际物理阵元数最少的条件下能够在接收端获得尽可能多的有效虚拟阵元数,即系统总的物理阵元利用率最高; 然后约束多输入多输出雷达的虚拟阵列满足最小冗余阵的要求,从而提高系统的分辨率并克服栅瓣和高旁瓣的影响.理论分析和算法求解结果都表明,该算法优化出的多输入多输出雷达阵列是收发为同一阵列的非均匀线阵,在物理阵元总数相同的条件下,较其他阵列结构具有更好的波束性能.

关键词: 多输入多输出雷达, 虚拟阵元, 阵列结构优化, 阵元利用率

Abstract:

A new array optimization algorithm for the MIMO radar is proposed. First, a minimum number of physical sensors are used to get as many virtual sensors as possible, so the physical sensors efficiency is maximum; and then the virtual array of the MIMO radar is subject to a minimum redundancy array, so the resolution of the MIMO radar system is improved and the high side-lobe levels are reduced. Theoretical analysis indicates that the array of the MIMO radar optimized by the algorithm in this paper is an NLA with its elements both for receivers and for transmitters. With the same number of physical sensors, the MIMO radar in this paper can improve the ratio of mainlobe to sidelobe of the beampattern compared with other MIMO radar array geometries. Some numerical examples are simulated to verify the effectiveness of the algorithm.

Key words: MIMO radar, virtual sensor, array optimization, physical sensors efficiency