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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.04169 |
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| _version_ | 1866915430634881024 |
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| author | Zhang, Ruiyun Wang, Zhaolin Wei, Zhiqing Liu, Yuanwei Xiong, Zehui Feng, Zhiyong |
| author_facet | Zhang, Ruiyun Wang, Zhaolin Wei, Zhiqing Liu, Yuanwei Xiong, Zehui Feng, Zhiyong |
| contents | Two subspace fitting approaches are proposed for wideband near-field localization. Unlike in conventional far-field systems, where distance and angle can be estimated separately, spherical wave propagation in near-field systems couples these parameters. We therefore derive a frequency-domain near-field signal model for multi-target wideband systems and develop a subspace fitting-based MUSIC method that jointly estimates distance and angle. To reduce complexity, a Fresnel approximation MUSIC algorithm is further introduced to decouple the distance and angle parameters. Numerical results verify the effectiveness of both proposed approaches. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_04169 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Subspace Fitting Approach for Wideband Near-Field Localization Zhang, Ruiyun Wang, Zhaolin Wei, Zhiqing Liu, Yuanwei Xiong, Zehui Feng, Zhiyong Signal Processing Two subspace fitting approaches are proposed for wideband near-field localization. Unlike in conventional far-field systems, where distance and angle can be estimated separately, spherical wave propagation in near-field systems couples these parameters. We therefore derive a frequency-domain near-field signal model for multi-target wideband systems and develop a subspace fitting-based MUSIC method that jointly estimates distance and angle. To reduce complexity, a Fresnel approximation MUSIC algorithm is further introduced to decouple the distance and angle parameters. Numerical results verify the effectiveness of both proposed approaches. |
| title | Subspace Fitting Approach for Wideband Near-Field Localization |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2508.04169 |