Concurrent Use of OSCAT and AltiKa to Characterize Antarctic Ice Surface Features
Radar altimetry provides an important geophysical parameter, backscatter coefficient (σ0), which is useful in studying target surface characteristics. Ku-band (Oceansat-2 scatterometer- OSCAT) and Ka-band (SARAL-AltiKa altimeter) data are concurrently used to characterize
polar surface features over the Antarctic region. Maximum-likelihood classification has been employed to classify combined data set (AltiKa and OSCAT) for discrimination among sea ice, open water, and ice sheet (interior and exterior). The sea ice region obtained using the current approach
has been compared with sea ice boundary derived from passive microwave data.
Keywords: Oceansat-2 scatterometer; SARAL-AltiKa; altimeter; ice sheet; sea ice
Document Type: Research Article
Affiliations: Oceanic Sciences Division/Earth, Ocean, Atmosphere, Planetary Sciences & Applications Area, Space Applications Centre–Indian Space Research Organisation, Ahmedabad, India
Publication date: 10 September 2015
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