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重叠阵元时分复用MIMO雷达多目标参数估计方法研究

田丰 刘万 符渭波 张浩宇

田丰, 刘万, 符渭波, 张浩宇. 重叠阵元时分复用MIMO雷达多目标参数估计方法研究[J]. 电子与信息学报, 2024, 46(1): 229-239. doi: 10.11999/JEIT230039
引用本文: 田丰, 刘万, 符渭波, 张浩宇. 重叠阵元时分复用MIMO雷达多目标参数估计方法研究[J]. 电子与信息学报, 2024, 46(1): 229-239. doi: 10.11999/JEIT230039
TIAN Feng, LIU Wan, FU Weibo, ZHANG Haoyu. Research on Multi-target Parameter Estimation Method for Overlapping-element Time Division Multiplexing MIMO Radar[J]. Journal of Electronics & Information Technology, 2024, 46(1): 229-239. doi: 10.11999/JEIT230039
Citation: TIAN Feng, LIU Wan, FU Weibo, ZHANG Haoyu. Research on Multi-target Parameter Estimation Method for Overlapping-element Time Division Multiplexing MIMO Radar[J]. Journal of Electronics & Information Technology, 2024, 46(1): 229-239. doi: 10.11999/JEIT230039

重叠阵元时分复用MIMO雷达多目标参数估计方法研究

doi: 10.11999/JEIT230039
基金项目: 陕西省科技计划(2020GY-029)
详细信息
    作者简介:

    田丰:男,教授,研究方向为通信信号处理等

    刘万:男,硕士生,研究方向为雷达信号处理

    符渭波:男,高级工程师,研究方向为MIMO雷达信号处理、阵列信号处理等

    张浩宇:男,硕士生,研究方向为雷达信号处理

    通讯作者:

    田丰 tianfeng@xust.edu.cn

  • 中图分类号: TN958

Research on Multi-target Parameter Estimation Method for Overlapping-element Time Division Multiplexing MIMO Radar

Funds: The Project of Science and Technology of Shaanxi (2020GY-029)
  • 摘要: 针对多普勒-角度耦合和速度模糊问题,该文提出一种基于重叠阵元MIMO阵列的多目标参数估计方法。该方法基于虚拟孔径原理,在传统MIMO天线阵列中引入重叠阵元,构建重叠阵元MIMO天线阵列。通过在角度快速傅里叶变换(FFT)算法中引入循环迭代的方法估计阵列位置参数,利用重叠阵元回波信号的相位差值进行频率估计。同时,引入频谱搬移方法对速度区间进行转换,实现多目标的距离和速度估计。通过蒙特卡罗仿真实验,信噪比15 dB 的条件下,解模糊正确率为100%,速度误差为0.1 m/s,角度误差为0.1°。基于城市交通场景采集的车辆数据集进行测试,测试结果表明,该方法能够实现对车辆目标的速度和角度精确估计,可满足交通雷达对车辆信息监测的实时性和准确性需求。
  • 图  1  重叠阵元MIMO天线阵列

    图  2  TDM-MIMO发射波形

    图  3  速度模糊模型

    图  4  搬移后的速度模糊模型

    图  5  算法流程图

    图  6  2维频谱图

    图  7  速度解模糊算法性能

    图  8  目标3的角度波形图

    图  9  多目标结果图

    图  10  实测场景

    图  11  2维频谱图

    图  12  多目标结果图

    表  1  毫米波雷达参数

    雷达参数仿真数值实测数值
    载频${f_0}$(GHz)6060
    调制周期$T$(μs)4545
    调频带宽$B$(MHz)200200
    慢时间维${N_d}$128128
    距离分辨率(${\rm{m}}$)0.750.75
    最大探测距离(${\rm{m}}$)384384
    速度分辨率(${\rm{m}}/{\rm{s}}$)0.1080.108
    最大不模糊速度(${\rm{m}}/{\rm{s}}$)±20±20
    角度分辨率(°)2.72.7
    下载: 导出CSV

    表  2  模拟目标参数

    目标参数目标距离(m)目标速度(m/s)目标角度(°)
    目标1185–9
    目标235150
    目标390–2015
    下载: 导出CSV

    表  3  多目标仿真结果

    目标参数距离测量值(m)模糊速度(m/s)模糊数速度测量值(m/s)角度测量值(°)
    目标118.04.9904.99–9.05
    目标234.51.19115.080
    目标390.57.70–2–20.0715.03
    下载: 导出CSV

    表  4  目标参数

    目标参数目标1目标2
    真实距离(m)4015
    真实速度(m/s)1710.5
    真实角度(°)–1–8
    距离测量值(m)39.7515
    模糊速度(m/s)3.1510.53
    解得模糊数10
    速度测量值(m/s)16.9310.53
    角度测量值(°)–0.85–7.87
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-02-01
  • 修回日期:  2023-08-21
  • 网络出版日期:  2023-08-23
  • 刊出日期:  2024-01-17

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