Study on a combined threshold selection method of persistent scatterers for ground-based synthetic aperture radar

Licheng Ge; Peng Wang; Bin Zhang; Bo Shi; Weicheng Li; Xiao Jin

doi:10.1117/12.3021091

19 January 2024 Study on a combined threshold selection method of persistent scatterers for ground-based synthetic aperture radar

Licheng Ge, Peng Wang, Bin Zhang, Bo Shi, Weicheng Li, Xiao Jin

Author Affiliations +

Proceedings Volume 12980, Fifth International Conference on Geoscience and Remote Sensing Mapping (ICGRSM 2023); 1298015 (2024) https://doi.org/10.1117/12.3021091
Event: Fifth International Conference on Geoscience and Remote Sensing Mapping (ICGRSM 2023), 2023, Lianyungang, China

Abstract

The selection of high-quality point targets, such as persistent scatterer (PS), is very important for GB-SAR interfero-metry deformation inversion. Considering the limitation of single-threshold selection method of persistent scatterer (PS) point target for ground-based synthetic aperture radar (GB-SAR), a combined threshold selection method is proposed in this paper, and a quality assessment method for point target selection is designed to evaluate the effectiveness of the point selection. The efficiency of both the single-threshold method and the combined-threshold method was compared using the real-case continuous GB-SAR images in the Geheyan dam area. The analysis results demonstrate that the proposed threshold approach successfully integrates each of the single-threshold method's advantages. It achieves a higher selection rate of high-quality PS with lenient thresholds while also enhancing overall computational efficiency. This approach ensures robust support for subsequent time series analysis of GB-SAR interferometry.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Licheng Ge, Peng Wang, Bin Zhang, Bo Shi, Weicheng Li, and Xiao Jin "Study on a combined threshold selection method of persistent scatterers for ground-based synthetic aperture radar", Proc. SPIE 12980, Fifth International Conference on Geoscience and Remote Sensing Mapping (ICGRSM 2023), 1298015 (19 January 2024); https://doi.org/10.1117/12.3021091

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