DiapOTB: a new open source tool for Differential SAR interferometry

Konferenz: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
29.03.2021 - 01.04.2021 in online

Tagungsband: EUSAR 2021

Seiten: 4Sprache: EnglischTyp: PDF

Durand, Philippe; Pourthie, Nadine; Tison, Celine (CNES, Toulouse, Toulouse, France)
Usseglio, Gaelle (Thales services, Labège, France)

Based on the heritage of DIAPASON, the legacy CNES interferometric processing, DiapOTB (Differential Interferometric Automated Process Open Tool Box) is a complete D-INSAR chain designed to work as an Orfeo Tool Box (OTB v7.0 or higher) remote module or as a standalone module. This module is a toolbox for computation of interferometric time series. It includes a registration module of all the images with respect to a master image. The registration accuracy is better than 0.1 pixel. Then the mean amplitude image, the interferogram and the coherence images are computed for each image pair. A DTM is used as input. The interferograms are thus differential interferograms with respect to the DTM. At this stage, DiapOTB is able to process Sentinel-1 images, both in stripmap and topsar modes, and also CosmoSkymed images both in stripmap and spotlight modes. Scripts are available in DiapOTB to generate co-registered SLC time-series as well as stacks of interferograms. Future plan is to extend DiapOTB to other sensors (such as TerraSAR-X/ PAZ).