|Table of Contents|

Application of improved fractal model for electromagnetic scattering from sea surface

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2014年01期
Page:
140-146
Research Field:
Publishing date:

Info

Title:
Application of improved fractal model for electromagnetic scattering from sea surface
Author(s):
Chen Yu1Hu Yunan2Lin Tao2Wang Hongwei2
1.The 91213st Unit of PLA,Yantai 264001,China; 2.Department of Control Engineering, Naval Aeronautical and Astronautical University,Yantai 264001,China
Keywords:
fractal model Longuet-Higgin model electromagnetic scattering Kirchhoff approximation
PACS:
O451
DOI:
-
Abstract:
Aiming at the problem that the ominidirectional sea-wave spectrum of fractal sea-wave model can not satisfy the positive power law when spatial wave numbers are smaller than the fundamental wave number,a 2-D sea surface model is proposed by combining statistical sea surface model and normalization band-limited Weierstrass-Mandelbrot(WM)fractal sea surface model.With the proposed method,the closed form expression of the directional sea-wave spectrum is calculated.Scattering coefficients and scattering intensity coefficients of the improved sea surface model based on the Kirchhoff approximation are derived.Simulation results show that omnidirectional sea-wave spectrum is in good agreement with the common spectrum of Pierson-Moskowitz(PM)and the real data of the South China Sea.This proves the validity of the improved model,and the fractal characteristics of sea surface is also well represented in the scattering signal.

References:

[1] Florent J,Stephane S.Wavelet contribution to remote sensing of the sea and target detection for a high-frequency surface wave radar[J].IEEE Transactions on GRS,2008,5(3):552-555.
[2]Giuseppe R,Pablo B S,Antonio I.Measurement of the electromagnetic field backscattered by a fractal surface for the verification of electromagnetic scattering models[J].IEEE Transactions on GRS,2010,48(4):1777-1779.
[3]Xu X K.Low observable targets detection by joint fractal properties of sea clutter:An experimental study of IPIX OHGR datasets[J].IEEE Transactions on Antennas and Propagation,2010,58(4):1425-1426.
[4]Jaggard D L,Sun X.Scattering from fractal surfaces[J].Opt Soc Am A,1990,7(6):1131-1139.
[5]Franceschetti G,Migliaccio M,Riccio D.An electromag-netic fractal-based model for the study of fading[J].Radio Science,1996,31(6):1749-1759.
[6]Berizzi F,Mese E D.Scattering coefficient evaluation from a Two-Dimensional sea fractal surface[J].IEEE Transactions on Antennas Propagation,2002,50(4):426-434.
[7]Berizzi F,Mese E D.Scattering from a 2-dimensional sea fractal surface:Fractal analysis of the scattered signal[J].IEEE Transactions on GRS,2002,50(7):912-935.
[8]Chen J,Lo K Y,Leung H.The use of fractals for modeling EM waves scattering from rough sea surfaces[J].Transactions on Geosci Remote Sens,1996,34(4):966-972.
[9]杨俊岭,郭立新,万建伟.基于未充分发展海谱的分形海面模型及其电磁散射研究[J].物理学报,2007,56(4):2107-2109.
Yang Junling,Guo Lixin,Wan Jianwei.Study of electromagnetic scattering from fractal sea surface based on non-fully developed sea spectrum[J].Acta Physica Sinic,2007,56(4):2107-2109.
[10]万建伟,王展,杨俊岭.一种新的动态分形海面模型及其电磁散射统计特性研究[J].国防科技大学学报,2007,29(5):36-39.
Wan Jianwei,Wang Zhan,Yang Junling.A new time-varying fractal sea model and its statistical characteristics of electromagnetic scattering[J].Journal of National University of Defense Technology,2007,29(5):36-39.
[11]王运华,郭立新,吴振森.改进的一维分形模型在海面电磁散射中的应用[J].电子学报,2007,35(3):478-480.
Wang Yunhua,Guo Lixin,Wu Zhensen.The application of an improved 1D fractal model for EM scattering from sea surface[J].Acta Electronica Sinica,2007,35(3):478-480.
[12]王运华,郭立新,吴振森.改进的二维分形模型在海面电磁散射中的应用[J].物理学报,2006,55(10):5192-5194.
Wang Yunhua,Guo Lixin,Wu Zhensen.The application of an improved 2D fractal model for electromagnetic scattering from the sea surface[J].Acta Physica Sinic,2006,55(10):5192-5194.
[13]Berizzi F,Mese E D.Sea-wave fractal spectrum for SAR remote sensing[J].IEE Pro-Radar Sonar Navig,2001,148(2):56-65.
[14]Pierson W J,Marks W.A proposed spectral form for fully developed wind seas based on the similarity theory of S.A.Kitaigorodskii[J].IEEE Transactions on GRS,1956,49(24):5181-5190.
[15]Wen S C,Guo P F,Zhang D C.Theoretical wind wave frequency spectra in shallow water[J].Act Oceanologica Sinica,1988,7(3):335-336.
[16]Morrison A I,Srokoz M A.Estimating the fractal dimension of the sea surface:first attempt[J].Ann Geophys,1993,11(4):648-658.
[17]Longuet-Higgins M S.The distribution of intervals between zeros of a stationary random function[J].Philosophical Transactions for the Royal Society of London,1962,254(1047):557-599.
[18]Bechmann P,Spizzichino A.The scattering of electromag-netic waves from rough surfaces[M].New York:Pergamon,1963:17-25.
[19]文圣常,张大错,郭佩芳.改进的理论风浪频谱[J].海洋学报,1990,12(3):277-279.
Wen Shengchang,Zhang Dacuo,Guo Peifang.Improved theoretical wind wave frequency spectra[J].Act Oceanologica Sinica,1990,12(3):277-279.

Memo

Memo:
-
Last Update: 2014-02-28