J4 ›› 2013, Vol. 40 ›› Issue (3): 180-187.doi: 10.3969/j.issn.1001-2400.2013.03.027

• 研究论文 • 上一篇    下一篇

二维宽带MIMO雷达发射方向图综合方法

杨涛;苏涛;张旺   

  1. (西安电子科技大学 雷达信号处理国家重点实验室,陕西 西安  710071)
  • 收稿日期:2012-03-23 出版日期:2013-06-20 发布日期:2013-07-29
  • 通讯作者: 杨涛
  • 作者简介:杨涛(1985-),男,西安电子科技大学博士研究生,E-mail: taoyang@mail.xidian.edu.cn.
  • 基金资助:

    国家自然科学基金资助项目(61001204);中央高校基本科研业务费专向资金资助项目(JY0000902020)

Transmit beampattern synthesis and waveform design  for 2-D wideband MIMO radar

YANG Tao;SU Tao;ZHANG Wang   

  1. (National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an  710071, China)
  • Received:2012-03-23 Online:2013-06-20 Published:2013-07-29
  • Contact: YANG Tao

摘要:

为了匹配二维宽带MIMO雷达系统给定的发射方向图,提出了一种基于频率不变波束形成的发射方向图综合和波形设计方法.该方法首先利用均匀平面阵列方向图与发射波形的频谱具有二维傅里叶变换的关系,去除了发射方向图与波形频率的相关性; 建立了具有恒模约束条件的时域波形最优匹配频率响应的代价函数; 采用交替优化的思想,求解出恒模发射波形.该方法能够有效地改善二维宽带MIMO雷达发射波束方向图频率色散问题.仿真实验验证了该方法的有效性.

关键词: MIMO雷达, 宽带, 发射方向图综合, 均匀平面阵

Abstract:

For matching the desired transmit beampattern of the two dimensional(2-D) wideband MIMO radar system, a new transmit beampattern synthesis and waveform design algorithm is proposed based on the frquency invariant beamforming. In this algorithm, to eliminate any dependency on frequency of the emiting waveform, the 2-D fourier relationship between uniform rectangular array(URA) transmit beampattern and spectrum of emiting waveform is used. Then the cost function of waveform matching frequency response is established, which imposes a constraint on constant modulus. Finally, the alternating matrix fitting method is used to design unimodular sequences. The proposed method effectively mitigates frequency dispersion of the 2-D wideband MIMO radar transmit beampattern. Numerical simulations have proved the validity of this algorithm.

Key words: MIMO radar, wideband, transmit beampattern synthesis, uniform rectangular array(URA)

中图分类号: 

  • TN957.51