Phase Altimetry With Dual Polarization GNSS-R Over Sea Ice

Fabra, F.; Cardellach, E.; Rius, A.; Ribó, S.; Oliveras, S.; Nogués-Correig, O.; Belmonte Rivas, M.; Semmling, Maximilian; D'Addio, S.

doi:10.1109/TGRS.2011.2172797

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Phase Altimetry With Dual Polarization GNSS-R Over Sea Ice

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Fabra, F.
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Cardellach, E.
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Rius, A.
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Ribó, S.
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Oliveras, S.
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Nogués-Correig, O.
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Belmonte Rivas, M.
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/persons/resource/maxsem

Semmling, Maximilian
1.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

D'Addio, S.
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Fabra, F., Cardellach, E., Rius, A., Ribó, S., Oliveras, S., Nogués-Correig, O., Belmonte Rivas, M., Semmling, M., D'Addio, S. (2012): Phase Altimetry With Dual Polarization GNSS-R Over Sea Ice. - IEEE Transactions on Geoscience and Remote Sensing, 50, 6, 2112-2121.
https://doi.org/10.1109/TGRS.2011.2172797

https://gfzpublic.gfz-potsdam.de/pubman/item/item_244578

Zusammenfassung

This paper evaluates the potential use of reflected signals from Global Navigation Satellite Systems as a source of opportunity for the retrieval of absolute ellipsoidal heights over sea ice. Accurate estimation of the surface level would be helpful for the determination of the ice thickness, a key parameter for classification and characterization of sea ice masses. Our analysis is based on altimetric estimations from the coherent differential phase between direct and both cross- and co-polar reflected signals. For this purpose, GPS waveforms have been collected from a fixed platform in Greenland, monitoring the complete process of sea ice formation and melting during a 7-month period. The variability of coherent phase samples and polarimetric measurements are compared with in situ observations to make a realistic rough characterization of the ice cover. The retrieved sea ice surface height estimates are then evaluated against an Arctic tide model, ice surface temperature from moderate-resolution imaging spectroradiometer, and the laser altimetry product from ICESat.