NDLI: Retrieval of fully polarimetric mueller matrix under Faraday rotation effect at P band in space-borne polarimetric SAR observation

Content Provider	IEEE Xplore Digital Library
Author	Ya-Qiu Jin Ren-Yuan Qi
Copyright Year	2007
Description	Author affiliation: Fudan Univ., Shanghai (Ya-Qiu Jin; Ren-Yuan Qi)
Abstract	Spaceborne microwave observation of subcanopy and subsurface requires the SAR (polarimetric synthetic aperture radar) technology at lower microwave frequencies, such as P band. However, SAR observation at P band is remarkably influenced by Faraday rotation (FR) effect through ionosphere. An example in this paper illustrates why the measured polarimetric data with FR at P band cannot be directly applied to terrain surface classification. We further present that the parameters u, v, H, a, A for terrain surface classification derived from the polarimetric data without FR, which are recovered from the data with FR, can be applied to the surface classification, even there is a plusmn pi/2 ambiguity error unresolved. Based on gradual change of FR degree along geographical location, a method to eliminate the plusmn pi/2 ambiguity error is designed. Thus, the polarimetric scattering vector and Mueller matrix without FR and plusmn pi/2 ambiguity can be fully inverted from the measured polarimetric data with FR.
Starting Page	4167
Ending Page	4170
File Size	1141611
Page Count	4
File Format	PDF
ISBN	9781424412112
DOI	10.1109/IGARSS.2007.4423768
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-23
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic scattering Frequency Ionosphere Electromagnetic wave polarization Geomagnetism Synthetic aperture radar Radar scattering Hydrologic measurements Wavelength measurement Information retrieval terrain surface classification FR P-band SAR
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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