Concurrent Use of OSCAT and AltiKa to Characterize Antarctic Ice Surface Features |
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| Authors: | Kamaljit Singh Rajkumar Megha Maheshwari Jayaprasad Pallipad Dhani Ram Rajak Raj Kumar |
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| Institution: | 1. Oceanic Sciences Division/Earth, Ocean, Atmosphere, Planetary Sciences &2. Applications Area, Space Applications Centre–Indian Space Research Organisation, Ahmedabad, India |
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| Abstract: | 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 sea ice ice sheet |
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