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

Abstract

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)

CLC Number:

TN958

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

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