车载毫米波雷达多径假目标分析与消除方法

doi:10.12305/j.issn.1001-506X.2024.01.10

系统工程与电子技术 ›› 2023, Vol. 46 ›› Issue (1): 88-96.doi: 10.12305/j.issn.1001-506X.2024.01.10

• 传感器与信号处理 • 上一篇

车载毫米波雷达多径假目标分析与消除方法

郑晶月¹^,²^,*, 吴佩仑¹, 陈家辉¹, 郭世盛¹, 崔国龙¹

1. 电子科技大学信息与通信工程学院, 四川成都 611731
2. 航空工业第一飞机设计研究院, 陕西西安 710089

收稿日期:2022-05-06 出版日期:2023-12-28 发布日期:2024-01-11
通讯作者: 郑晶月
作者简介:郑晶月(1997—), 女, 助理工程师, 硕士, 主要研究方向为雷达多径探测、信号处理
吴佩仑(1998—), 男, 博士研究生, 主要研究方向为城市环境非直视目标探测
陈家辉(1995—), 男, 博士研究生, 主要研究方向为超宽带雷达信号处理、穿墙雷达成像
郭世盛(1991—), 男, 副研究员, 博士, 主要研究方向为城市环境多径探测、雷达信号处理
崔国龙(1982—), 男, 教授, 博士, 主要研究方向为城市环境目标探测、阵列信号处理
基金资助:
国家自然科学基金(61871080);国家自然科学基金(62001091);长江学者计划;111计划(B17008);广东省重点领域研发计划(2020B009090 50002)

Multipath false target analysis and elimination method for automotive millimeter wave radar

Jingyue ZHENG¹^,²^,*, Peilun WU¹, Jiahui CHEN¹, Shisheng GUO¹, Guolong CUI¹

1. School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
2. The First Aircraft Institute of Aviation Industry Corporation of China, Xi'an 710089, China

Received:2022-05-06 Online:2023-12-28 Published:2024-01-11
Contact: Jingyue ZHENG

摘要/Abstract

摘要：

针对城市道路环境下车载毫米波雷达存在的多径假目标干扰真实目标定位的问题, 提出了一种多径假目标消除方法, 以实现真实目标的准确定位。首先分析了简化的城市道路多径场景的电磁传播路径并建立回波模型, 然后应用恒虚警率检测方法及最小方差无失真响应测角定位算法得到目标的初始定位结果, 最后通过理论分析多径假目标空间位置分布规律并将初始定位点迹与多径假目标进行匹配消除, 保留了真实目标定位点迹。实测试验结果表明, 所提出的多径假目标消除方法能够有效消除假目标定位点, 获得真实目标的定位结果。

关键词: 车载毫米波雷达, 多径消除, 目标定位, 最小方差无失真响应

Abstract:

Aiming at the problem that multipath false target interferes with real target location of automotive millimeter-wave radar in urban road environment, a multipath false target removal method is proposed to obtain the accurate location of real target. Firstly, the electromagnetic propagation path of simplifized urban road multipath scene is analyzed and the echo model is established. Then, the initial location result of the target is obtained by using the constant false alarm rate detection method and the minimum variance distortionless response (MVDR) localization method. Finally, the spatial location of multipath false target is analyzed theoretically, the multipath false targets is matched and eliminated in the initial location result, and the location of real target is retained. The experimental results validate that the proposed algorithm can effectively eliminate the multipath false target and obtain the real target location.

Key words: automotive millimeter-wave radar, multipath elimination, target localization, minimum variance distortionless response (MVDR)

中图分类号:

TN958

郑晶月, 吴佩仑, 陈家辉, 郭世盛, 崔国龙. 车载毫米波雷达多径假目标分析与消除方法[J]. 系统工程与电子技术, 2023, 46(1): 88-96.

Jingyue ZHENG, Peilun WU, Jiahui CHEN, Shisheng GUO, Guolong CUI. Multipath false target analysis and elimination method for automotive millimeter wave radar[J]. Systems Engineering and Electronics, 2023, 46(1): 88-96.

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路径类型	传播路径
Γ₁₁	O→Q₁₁→O
Γ₁₂	O→Q₁₁→P→O
Γ₂₁	O→P→Q₁₁→O
Γ₂₂	O→P→Q₁₁→P→O

参数	数值
载波频率f₀/GHz	77
信号带宽B/GHz	1.2
脉冲重复时间T/μs	162
采样率/MHz	5
采样点数	256
距离分辨率/m	0.125

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车载毫米波雷达多径假目标分析与消除方法

Multipath false target analysis and elimination method for automotive millimeter wave radar

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