Investigation of inhomogeneity parameters of ERS-2 wave mode image

Song, G.; Lehner, S.; Schulz-Stellenfleth, J.; Grassl, Hartmut

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Investigation of inhomogeneity parameters of ERS-2 wave mode image

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Song, G., Lehner, S., Schulz-Stellenfleth, J., & Grassl, H. (2008). Investigation of inhomogeneity parameters of ERS-2 wave mode image. In Proceedings of 'SeaSAR 2008', 21–25 January 2008 (ESA SP-656). Nordwijk: ESA.

Cite as: https://hdl.handle.net/21.11116/0000-000A-2819-E

Abstract

In order to classify different types of globally distributed synthetic aperture radar (SAR) wave mode images, which are acquired over the ocean for wind speed and sea state measurements, we develop a new scheme to differentiate images showing ocean wave, sea ice and surface slicks. A new classification parameter has been developed using 1535 SAR wave mode images to differentiate homogeneous and inhomoge-neous images. The new parameter is applied to two years of images. Comparison of the performance using the new parameter and inhomogeneity parameter (IH) defined in [1] are given. In the Arctic area the results of two parameters are compared to Special Sensor Microwave Imager (SSM/I) ice concentration data. The global distribution of inhomogeneous images is analyzed. Inhomegeneity in ice-free SAR images was found to be mainly due to low wind speed.