PolSAR based Scattering Characterization for Sea-Ice Topographic Retrieval using TanDEM-X Data

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

Tagungsband: EUSAR 2021

Seiten: 5Sprache: EnglischTyp: PDF

Huang, Lanqing (ETH Zürich, Switzerland)
Hajnsek, Irena (ETH Zürich, Switzerland & German Areospace Center (DLR), Wessling, Germany)

In this study, we investigated the multi-year sea ice in the western Weddell Sea based on the coordinate TanDEM-X synthetic aperture radar (SAR) and Operation Icebridge (OIB) photogrammetric campaign. The digital elevation model (DEM) of sea-ice surface topography is derived from dual-pol TanDEM-X imagery by interferometric SAR (InSAR) processing and compared with the photogrammetric measurements. We discussed how polarimetric signatures respond to the sea-ice surface topography and proposed a new method for sea-ice surface topographic mapping using co-polarimetric coherence. The results demonstrate the effectiveness of merging polarimetric signature into sea-ice surface topographic retrieval.