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Article Dans Une Revue IEEE Geoscience and Remote Sensing Letters Année : 2024

Time-delay Estimation based on an Enhanced Modified MUSIC with Co-prime Frequency Sampling for Rough Pavement

Résumé

In cases involving a rough interface, the echo frequency behavior of ultrawideband ground-penetrating radar (UWB-GPR) approximates a nonlinear Gaussian function. This characteristic leads to poor robustness and high computational complexity in existing modified MUSIC (Mod-MUSIC) methods. To address this challenge, this letter proposes an enhanced Mod-MUSIC (E-Mod-MUSIC) approach to mitigate the interference of false peaks, thus enhancing robustness. Furthermore, to reduce computational complexity while maintaining high estimation accuracy comparable to dense uniform frequency sampling (UFS) structures, a distributed co-prime frequency sampling structure (DCFSS) is used with E-Mod-MUSIC. Numerical simulations with different scenarios show the effectiveness of the proposed method.
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hal-04588386 , version 1 (03-07-2024)

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Biyun Ma, Zhihui Liu, Cui Qiu, Jiaojiao Liu, Yide Wang, et al.. Time-delay Estimation based on an Enhanced Modified MUSIC with Co-prime Frequency Sampling for Rough Pavement. IEEE Geoscience and Remote Sensing Letters, 2024, pp.3506805. ⟨10.1109/LGRS.2024.3405177⟩. ⟨hal-04588386⟩
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