电子学报 ›› 2013, Vol. 41 ›› Issue (12): 2462-2467.DOI: 10.3969/j.issn.0372-2112.2013.12.022

• 科研通信 • 上一篇    下一篇

双基地MIMO雷达收发角和多普勒频率参数的联合估计方法

李丽1,2, 邱天爽1   

  1. 1. 大连理工大学电子信息与电气工程学部, 辽宁大连 116024;
    2. 大连大学信息工程学院, 辽宁大连 116622
  • 收稿日期:2012-08-14 修回日期:2013-02-22 出版日期:2013-12-25
  • 通讯作者: 邱天爽
  • 作者简介: 李 丽 女,1979年生于黑龙江佳木斯,大连理工大学电子信息与电气工程学部博士生,主要研究方向为阵列信号处理等.
  • 基金资助:

    国家自然科学基金重点项目(No.61139001); 国家自然科学基金(No.61172108)

An Algorithm for DOD-DOA and Doppler Parameters Jointly Estimating in Bistatic MIMO Radar System

LI Li1,2, QIU Tian-shuang1   

  1. 1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China;
    2. Information Engineering College, Dalian University, Dalian, Liaoning 116622, China
  • Received:2012-08-14 Revised:2013-02-22 Online:2013-12-25 Published:2013-12-25

摘要: 本文提出了一种基于分数阶功率谱的双基地MIMO雷达发射角、接收角及多普勒频率参数的联合估计方法.针对目标的运动速度及运动状态的不断变化导致回波信号中存在时变的多普勒频率,本文提出一个新的回波信号模型.针对该模型通过搜索分数阶功率谱(FPSD)的峰值点实现多普勒频率参数的联合估计.随后,基于分数阶功率谱构造两个子阵,分别采用所提出的FPSD-MUSIC算法和FPSD-ESPRIT算法实现收发角的联合估计.接下来推导了该信号模型中目标参数估计的克拉美罗界.仿真实验验证了该文所提算法的有效性.

关键词: 双基地MIMO雷达, 分数阶功率谱, FPSD-MUSIC算法, FPSD-ESPRIT算法, 克拉美罗界

Abstract: A new algorithm to jointly estimate the DOD-DOA and Doppler parameters of bistatic multiple-input multiple-output(MIMO)radar is proposed based on the fractional power spectrum density.For moving target,the echo often contains time-varied Doppler frequency.A new signal array model of bistatic MIMO radar system is constructed in this paper.Doppler parameters are estimated by searching the peak of fractional power spectrum density(FPSD).Two subarrays are constructed based on FPSD.Both direction of departures(DODs)and direction of arrivals(DOAs)of the multiple targets are estimated by employing the FPSD-MUSIC algorithm and FPSD-ESPRIT algorithm.Furthermore,the Cramér-Rao bound(CRB)for target parameters estimation is derived.Simulation results are presented to verify the effectiveness of the proposed method.

Key words: bistatic multiple-input multiple-output(MIMO)radar, fractional power spectrum density(FPSD), FPSD-MUSIC algorithm, FPSD-ESPRIT algorithm, Cramér-Rao bound(CRB)

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