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A method for correcting InSAR interferogram errors using GNSS data and the K-means algorithm

Yan, Huineng ; Dai, Wujiao ; Xu, Wenbin ; Shi, Qiang ; Sun, Kai ; Lu, Zhigang ; Wang, Rui

Earth, planets, and space, 2024-12, Vol.76 (1), p.51-19 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
A method for correcting InSAR interferogram errors using GNSS data and the K-means algorithm
Autor: Yan, Huineng ; Dai, Wujiao ; Xu, Wenbin ; Shi, Qiang ; Sun, Kai ; Lu, Zhigang ; Wang, Rui
Assuntos: 6. Geodesy ; Accuracy ; Algorithms ; Artificial satellites in navigation ; Artificial satellites in remote sensing ; Clustering ; Deformation ; Deformation effects ; Deformations (Mechanics) ; Earth and Environmental Science ; Earth Sciences ; Error correction ; Error correction & detection ; Geology ; Geophysics/Geodesy ; Global navigation satellite system ; GNSS ; High-precision deformation time series ; InSAR ; Interferogram quality ; Interferometric synthetic aperture radar ; K-means algorithm ; Navigation ; Navigation satellites ; Navigation systems ; Navigational satellites ; SAR (radar) ; Satellites ; Synthetic aperture radar ; Synthetic aperture radar interferometry ; Wavelength
É parte de: Earth, planets, and space, 2024-12, Vol.76 (1), p.51-19
Descrição: Correcting interferometric synthetic aperture radar (InSAR) interferograms using Global Navigation Satellite System (GNSS) data can effectively improve their accuracy. However, most of the existing correction methods utilize the difference between GNSS and InSAR data for surface fitting; these methods can effectively correct overall long-wavelength errors, but they are insufficient for multiple medium-wavelength errors in localized areas. Based on this, we propose a method for correcting InSAR interferograms using GNSS data and the K-means spatial clustering algorithm, which is capable of obtaining correction information with high accuracy, thus improving the overall and localized area error correction effects and contributing to obtaining high-precision InSAR deformation time series. In an application involving the Central Valley of Southern California (CVSC), the experimental results show that the proposed correction method can effectively compensate for the deficiency of surface fitting in capturing error details and suppress the effect of low-quality interferograms. At the nine GNSS validation sites that are not included in the modeling process, the errors in the ascending track 137A and descending track 144D are mostly less than 15 mm, and the average root mean square error values are 11.8 mm and 8.0 mm, respectively. Overall, the correction method not only realizes effective interferogram error correction, but also has the advantages of high accuracy, high efficiency, ease of promotion, and can effectively address large-scale and high-precision deformation monitoring scenarios. Graphical Abstract
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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A method for correcting InSAR interferogram errors using GNSS data and the K-means algorithm

Yan, Huineng ; Dai, Wujiao ; Xu, Wenbin ; Shi, Qiang ; Sun, Kai ; Lu, Zhigang ; Wang, Rui

Berlin/Heidelberg: Springer Berlin Heidelberg

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