Polarimetric Calibration in the Presence of Small Faraday Rotation
Conference: EUSAR 2014 - 10th European Conference on Synthetic Aperture Radar
06/03/2014 - 06/05/2014 at Berlin, Germany
Proceedings: EUSAR 2014
Pages: 4Language: englishTyp: PDF
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Authors:
Zhang, Jingjing; Guo, Shenglong; Li, Yang (Institute of Electronics, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, China)
Hong, Wen (Institute of Electronics, Chinese Academy of Sciences, China)
Abstract:
For spaceborne polarimetric synthetic aperture radar (SAR) operated at longer wavelength, they are affected not only by system distortions but also Faraday rotation (FR). The data-based calibration techniques in the literature are by design worked in the Faraday rotation free condition. Blind application of those techniques may lead to very large calibration errors. In this paper, we investigate the effect of FR on these data-based calibration algorithm. What these calibration techniques yield are analytically derived. The conditions for successfully application of these algorithm is outlined.