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Concurrent Use of OSCAT and AltiKa to Characterize Antarctic Ice Surface Features

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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.
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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: September 10, 2015

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