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Sea ice identification using dual-polarized Ku-band scatterometer data

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4 Author(s)
Yueh, S.H. ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; Kwok, R. ; Shu-Hsiang Lou ; Wu-Yang Tsai

This paper describes a classification algorithm using dual-polarized scatterometer measurements to identify the edge of the sea ice cover. The distinct polarization scattering signatures of sea ice and open water are discussed and illustrated with the dual-polarized radar measurements from the Seasat-A scatterometer (SASS). The analysis of SASS data suggests that the ratio of vertical and horizontal polarization backscatter, denoted as the copol ratio, is a useful discriminator of sea ice and open ocean. A simple classification algorithm using the thresholds of the copol ratio and backscatter levels is proposed. The feasibility of this algorithm is demonstrated using the SASS data from the single-sided, dual-polarization mode. The results indicate that the dual-polarized measurements from the NASA scatterometer (NSCAT) can be used to produce routine maps of sea ice edges

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:35 ,  Issue: 3 )