通信学报 ›› 2012, Vol. 33 ›› Issue (11): 171-176.doi: 10.3969/j.issn.1000-436x.2012.11.022

• 学术通信 • 上一篇    下一篇

基于FRFT的双基地MIMO雷达多普勒频率和收发角联合估计新方法

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
  • 出版日期:2012-11-25 发布日期:2017-07-25
  • 基金资助:
    国家自然科学基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目

Joint estimation of doppler frequency and DOA-DOD based on FRFT in bistatic MIMO radar system

Li LI1,2,Tian-shuang QIU1   

  1. 1 Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China
    2 Information Engineering College,Dalian University,Dalian 116622,China
  • Online:2012-11-25 Published:2017-07-25
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China

摘要:

提出了一种新的双基地MIMO 雷达系统中参数联合估计方法。首先提出了一个新的双基地MIMO 雷达阵列信号模型,利用分数阶傅里叶变换能量聚集特性对多普勒频率的初始频率和调频率进行联合估计。然后,在分数阶傅里叶变换域内构造2个子阵,采用FRFT-MUSIC算法和FRFT-ESPRIT算法实现了收发角的联合估计。仿真实验表明,本算法在低信噪比时同样具有较好的性能。

关键词: 双基地MIMO雷达, 多普勒频率, DOA-DOD, 分数阶傅里叶变换, FRFT-MUSIC算法

Abstract:

A novel method for the joint parameters estimate in the bistatic multiple-input multiple-output (MIMO) radar system was proposed.Firstly,a novel signal model to accurately estimate parameters of the et was proposed.Two Doppler parameters,initial Doppler frequency and Doppler frequency rate,were estimated by peak-searching in the fractional Fourier transform (FRFT) domain.Two sub-array models to accurately estimated the direction of departure (DOD) and direction of arrival (DOA) by employing the proposed fractional Fourier transform based MUSIC (FRFT-MUSIC) algorithm and the fractional Fourier transform ESPRIT (FRFT-ESPRIT) algorithm.Simulation results were presented to verify the effectiveness of the proposed method.

Key words: bistatic MIMO radar, Doppler frequency, DOA-DOD, FRFT-MUSIC algorithm, FRFT-ESPRIT algorithm

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