Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation

doi:10.1088/1674-1056/19/8/084102

中国物理B ›› 2010, Vol. 19 ›› Issue (8): 84102-084102.doi: 10.1088/1674-1056/19/8/084102

Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation

周平¹, 殷红成¹, 罗伟², 张民²

(1)National Electromagnetic Scattering Laboratory, Beijing 100854, China; (2)School of Science, Xidian University, Xi'an 710071, China

收稿日期:2009-12-03 修回日期:2010-01-29 出版日期:2010-08-15 发布日期:2010-08-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60871070) and the National Pre-research Foundation and the Foundation of National Electromagnetic Scattering Laboratory, China.

Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation

Luo Wei(罗伟)^a), Zhang Min(张民)^a)†, Zhou Ping(周平)^b), and Yin Hong-Cheng(殷红成)^b)

^a School of Science, Xidian University, Xi'an 710071, China; ^b National Electromagnetic Scattering Laboratory, Beijing 100854, China

Received:2009-12-03 Revised:2010-01-29 Online:2010-08-15 Published:2010-08-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60871070) and the National Pre-research Foundation and the Foundation of National Electromagnetic Scattering Laboratory, China.

摘要/Abstract

摘要： An iterative method in the Kirchhoff approximation is proposed for high frequency multiple electromagnetic scattering from two-dimensional dielectric sea surface. The multiple interaction of the scattering field is characterized with the corrected electromagnetic currents of the wind-driven sea surface. The actual surface currents are approximated with the iterative solution of the corrected currents. A newly developed sea spectrum, Elfouhaily spectrum, is utilized to build the sea surface model. The shadowing correction is improved by the Depth–Buffer algorithm. The validity of the iterative Kirchhoff approximation is verified by the agreement of backscattering coefficients with the measured data.

Abstract: An iterative method in the Kirchhoff approximation is proposed for high frequency multiple electromagnetic scattering from two-dimensional dielectric sea surface. The multiple interaction of the scattering field is characterized with the corrected electromagnetic currents of the wind-driven sea surface. The actual surface currents are approximated with the iterative solution of the corrected currents. A newly developed sea spectrum, Elfouhaily spectrum, is utilized to build the sea surface model. The shadowing correction is improved by the Depth–Buffer algorithm. The validity of the iterative Kirchhoff approximation is verified by the agreement of backscattering coefficients with the measured data.

Key words: sea surface, multiple scattering, iterative methods, shadowing correction

中图分类号: (Instruments and techniques for geophysical research: Exploration geophysics)

93.85.-q

91.50.Iv (Marine magnetics and electromagnetics) 92.60.Gn (Winds and their effects)

罗伟, 张民, 周平, 殷红成. Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation[J]. 中国物理B, 2010, 19(8): 84102-084102.

Luo Wei(罗伟), Zhang Min(张民), Zhou Ping(周平), and Yin Hong-Cheng(殷红成). Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation[J]. Chin. Phys. B, 2010, 19(8): 84102-084102.

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Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation

Analysis of multiple scattering from two-dimensional dielectric sea surface with iterative Kirchhoff approximation

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