Moment-based Characterization of Spatially Distributed Sources in SAR Tomography
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866916654420590592 |
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| author | Cros, Colin Ferro-Famil, Laurent |
| author_facet | Cros, Colin Ferro-Famil, Laurent |
| contents | This paper presents a non-parametric method for 3-D imaging of natural volumes using Synthetic Aperture Radar tomography. This array processing-based technique aims at characterizing a spatially distributed density of incoherent sources, whose shape is imprecisely known. The proposed technique estimates the moments of the reflectivity density using a low-complexity covariance matching approach, and retrieves the mean location, dispersion, and power of the distributed source. Numerical simulations of realistic tomographic scenarios show that the proposed model-free scheme achieves better accuracy than slightly misspecified maximum likelihood estimators, derived from approximately known distribution shapes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_12975 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Moment-based Characterization of Spatially Distributed Sources in SAR Tomography Cros, Colin Ferro-Famil, Laurent Signal Processing This paper presents a non-parametric method for 3-D imaging of natural volumes using Synthetic Aperture Radar tomography. This array processing-based technique aims at characterizing a spatially distributed density of incoherent sources, whose shape is imprecisely known. The proposed technique estimates the moments of the reflectivity density using a low-complexity covariance matching approach, and retrieves the mean location, dispersion, and power of the distributed source. Numerical simulations of realistic tomographic scenarios show that the proposed model-free scheme achieves better accuracy than slightly misspecified maximum likelihood estimators, derived from approximately known distribution shapes. |
| title | Moment-based Characterization of Spatially Distributed Sources in SAR Tomography |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2503.12975 |