The Added-Value of TOPSAR Coherence Tracking for Sentinel-1 Interferometry Over Ice Shelves
Conference: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
03/29/2021 - 04/01/2021 at online
Proceedings: EUSAR 2021
Pages: 5Language: englishTyp: PDF
Authors:
Glaude, Quentin (Laboratoire de Glaciologie, Université Libre de Bruxelles, Bruxelles, Belgium & Centre Spatial de Liège, Université de Liège, Angleur, Belgium)
Derauw, Dominique (Centre Spatial de Liège, Université de Liège, Angleur, Belgium & Instituto de Investigación en Paleobiología y Geología, Universidad Nacional De Rio Negro, General Roca, Argentina)
Barbier, Christian (Centre Spatial de Liège, Université de Liège, Angleur, Belgium)
Pattyn, Frank (Laboratoire de Glaciologie, Université Libre de Bruxelles, Bruxelles, Belgium)
Abstract:
Feature tracking has long been used as a technique to infer bidimensional displacement maps by locally maximizing the incoherent or coherent cross correlation of coregistered SAR images. Coherence tracking is based on the latter technique. Exploiting the phase information, the method tends to find local shifts that maximize the coherence information aiming at enhancing the interferometric signal while also bringing an estimation of bidimensional displacements. This is particularly important in fast-moving areas since it allows recovering an interferometric signal loss due to displacement-induced decorrelations. Here, we present the adaptation of the technique to TOPSAR acquisition mode and results in Antarctica.