Accurate azimuth estimation method for FMCW radar based on moving arrays

Tai An, Xiaopeng Yan, Yanwen Han, Jian Dai*, Jiawei Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Addressing the current challenges of weak target azimuth detection and inadequate precision in frequency modulated continuous wave (FMCW) radar systems, this paper proposes a novel method for precise imaging based on a motion array using FMCW radar for accurate range and azimuth estimation. The approach involves the use of a millimeter-wave FMCW radar with a motion array to capture target angular information, leading to a substantial improvement in azimuth estimation resolution, particularly for munitions. Additionally, spatial Fourier transform array signal processing is employed to achieve two-dimensional precise imaging of radar targets, encompassing both range and azimuth dimensions. Experimental results validate the effectiveness of the proposed approach, showcasing an enhanced angular resolution of the millimeter-wave radar, reaching 2.6°. The method demonstrates favorable azimuth estimation outcomes in diverse scenarios, including those involving multiple and planar targets. Overall, the introduced technique significantly elevates the precise detection capability of automotive millimeter-wave radar systems.

Original languageEnglish
Title of host publicationInternational Conference on Image, Signal Processing, and Pattern Recognition, ISPP 2024
EditorsRam Bilas Pachori, Lei Chen
PublisherSPIE
ISBN (Electronic)9781510680425
DOIs
Publication statusPublished - 2024
Event2024 International Conference on Image, Signal Processing, and Pattern Recognition, ISPP 2024 - Guangzhou, China
Duration: 8 Mar 202410 Mar 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13180
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2024 International Conference on Image, Signal Processing, and Pattern Recognition, ISPP 2024
Country/TerritoryChina
CityGuangzhou
Period8/03/2410/03/24

Keywords

  • accurate azimuth estimation
  • mm-wave FMCW radar
  • motion array
  • spatial fourier transform

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