NDLI: Extension of advanced integral equation model for calculations of fully polarimetric scattering coefficient from rough surface

Content Provider	IEEE Xplore Digital Library
Author	Hung-Wei Lee, Kun-Shan Chen, Jeng Chuan Wang, Tzong-Dar Wu, Jong-Sen Lee, Shi, J. C.
Copyright Year	2007
Description	Author affiliation: Department of Electrical Engineering, National Taiwan Ocean University, Keelung, China (Tzong-Dar Wu,) \|\| University of California at Santa Barbara, 93117, USA (Shi, J. C.) \|\| Center for Space and Remote Sensing Research, National Central University, Chung-Li, Taiwan, China (Hung-Wei Lee,; Kun-Shan Chen,; Jeng Chuan Wang,; Jong-Sen Lee,)
Abstract	The IEM model proposed in 1992, for rough surface scattering has been extensively applied for microwave remote sensing of terrain. Model validation has been made by experimental measurements and by numerical simulations. However, estimation accuracy was verified mostly for like- polarizations in the monostatic configuration. Since then, much effort has been devoted to improving the model performance. A recent AIEM(Advance IEM) incorporated these improvements and demonstrated significant enhancement in accuracy. Analysis was also extended to bistatic scattering for a wide range of surface parameters. In this study, we recognized that both theoretically and experimentally, the modified Stokes vector (Kennaugh matrix), including polarization correlation terms, are very useful to retrieve surface parameters such as wind field. Consequently, we extend the AIEM model to include all polarization correlation terms in order to understand the dependence of four Stokes terms on geophysical surface parameters, such as roughness, correlation length, and dielectric constant. Sensitivity analysis is also performed. Another useful aspect is in the physical interpretation of polarimetric returns as a function of azimuthal angle. Potential applications to soil moisture estimation will be illustrated and discussed.
Starting Page	73
Ending Page	76
File Size	1380619
Page Count	4
File Format	PDF
ISBN	9781424412112
DOI	10.1109/IGARSS.2007.4422733
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	Integral equations Rough surfaces Surface roughness Polarization Remote sensing Geophysical measurements Numerical simulation Scattering parameters Dielectric constant Sensitivity analysis Stokes vector polarimetric AIEM surface scattering
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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