Interferometric SAR deformation timeseries: a quality index
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Cita com:
hdl:2117/367230
Tipus de documentText en actes de congrés
Data publicació2021
EditorInternational Society for Photo-Optical Instrumentation Engineers (SPIE)
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Estimating unknown absolute phase from a wrapped observation is a challenging and ill-posed problem that possibly leads to misinterpretation of interferometric SAR (InSAR) deformation results. In this study, we introduce a quality index to cluster post-phase unwrapping multi-master InSAR timeseries outputs based on the estimated phase residuals and redundancy of network of interferograms. The index is supposed to indicate the reliability of a timeseries, including the identification of persistent scatterers (PSs) possibly affected by phase unwrapping jumps. The algorithm was tested on two Sentinel-1 interferometric datasets with 622,991 and 95,398 PSs, generated from the PSI processing chain PSIG of the geomatics division of CTTC. Promising result have been achieved-especially in identifying erroneous PSs with phase unwrapping jumps. Along with existing temporal phase consistency checking algorithms, the approach could provide rich information toward a better interpretation of the deformation timeseries results.
CitacióAbera, Y. [et al.]. Interferometric SAR deformation timeseries: a quality index. A: SPIE Remote Sensing. "Microwave Remote Sensing: Data Processing and Applications: 13-17 September 2021, online only, Spain". Washington: International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021, p. 118610A-1-118610A-9. DOI 10.1117/12.2600142.
Versió de l'editorhttps://spie.org/Publications/Proceedings/Paper/10.1117/12.2600142
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Wassie_ et al_2021_SPIE_RS.pdf | 1,573Mb | Visualitza/Obre |