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

Rajkumar, Kamaljit Singh

Radar altimetry provides an important geophysical parameter, backscatter coefficient (σ 0 ), 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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Concurrent Use of OSCAT and AltiKa to Characterize Antarctic Ice Surface Features

Rajkumar, Kamaljit Singh

Radar altimetry provides an important geophysical parameter, backscatter coefficient (σ 0 ), 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.

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

Rajkumar, Kamaljit Singh

Radar altimetry provides an important geophysical parameter, backscatter coefficient (σ 0 ), 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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Title:

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

Contributors:

Rajkumar, Kamaljit Singh (author) / Maheshwari, Megha / Pallipad, Jayaprasad / Ram Rajak, Dhani / Kumar, Raj / Oza, Sandip Rashmikant

Published in:

Marine geodesy ; 38

Publication date:

2015

ISSN:

DOI:

https://doi.org/10.1080/01490419.2014.1001047

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Meereskunde , Geodäsie , Kartografie

Classification:

BKL: 38.73 / 38.90 / 74.30 Kartographie: Allgemeines / 74.30 / 38.73 Geodäsie / 38.90 Ozeanologie, Ozeanographie
Local classification TIB: 770/3225

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