Matrix-Pencil Approach-Based Interference Mitigation for FMCW Radar Systems

Journal article (2021)

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DOI: https://doi.org/10.1109/TMTT.2021.3090798

Radar Interference Extrapolation Interference mitigation Signal fusion Matrix pencil Chirp Radar antennas Signal to noise ratio Frequency-modulated continuous-wave (FMCW) radar Radar signal processing Signal fusion.

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Published Date

2021

Language

English

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Abstract

A novel matrix-pencil (MP)-based interference mitigation approach for frequency-modulated continuous-wave (FMCW) radars is proposed in this article. The interference-contaminated segment of the beat signal is first cut out, and then, the signal samples in the cutout region are reconstructed by modeling the beat signal as a sum of complex exponentials and using the MP method to estimate their parameters. The efficiency of the proposed approach for the interference with different parameters (i.e., interference duration, signal-to-noise ratio (SNR), and different target scenarios) is investigated by means of numerical simulations. The proposed interference mitigation approach is intensively verified on experimental data. Comparisons of the proposed approach with the zeroing and other beat-frequency interpolation techniques are presented. The results indicate the broad applicability and superiority of the proposed approach, especially in low SNR and long interference duration situations.

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