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Volume 27 Issue 10
Oct.  2005
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Guo Li-xin, Ren Yu-chao, Wu Zhen-sen. Study on the Shadowing Effect and Doppler Spectra for the Scattering from the Time-Varying Fractal Rough Sea Surface[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1666-1670.
Citation: Guo Li-xin, Ren Yu-chao, Wu Zhen-sen. Study on the Shadowing Effect and Doppler Spectra for the Scattering from the Time-Varying Fractal Rough Sea Surface[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1666-1670.

Study on the Shadowing Effect and Doppler Spectra for the Scattering from the Time-Varying Fractal Rough Sea Surface

  • Received Date: 2004-04-21
  • Rev Recd Date: 2004-08-23
  • Publish Date: 2005-10-19
  • According to the Kirchhoff approximation for the rough surface scattering and by calculating the shadowing function and characteristic function of the fractal rough sea surface, the formula of the scattering cross section for the conducting fractal sea surface is derived with consideration of the shadowing effect. The influence of the shadowing effect for different RMS slope of the surface is investigated. The distribution of the scattering cross-section for the Gaussian rough surface and fractal rough sea surface is compared with millimeter wave incidence. The angular distribution of the bistatic scattering cross-section from fractal sea surface for different fractal dimension and different spatial frequency is analyzed. The influence of different incident angle, different fractal dimension and shadowing effect on the Doppler spectra of the echo from the fractal sea surface is discussed in detail.
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  • Ulaby F T, Moore R K, Fung A K. Microwave Remote Sensing. Vol.II, Reading, MA: Addision -Wesbey Publishing, 1982, chap.12.[2]Lin N. Wave scattering from fractal surface[J].J. of Modern Opt.1995, 42(1):225-241[3]Berizzi F, Dalle-Mese E. Fractal analysis of the signal scattered from the sea surface[J].IEEE Trans. on Antennas Propag.1999, 47(2):324-338[4]Ranceschetti G, Iodice A. Scattering from natural rough surface modeled by fractional Brownian motion two-dimensional[5]processes. IEEE Trans[J].on Antennas Propag.1999, 47(9):1405-1415[6]Guo Lixin, Wu Zhensen. Fractal characteristics investigation on light scattering from two dimensional rough surface[J].Int. J. Infrared and Mill. Wave.2000, 21(12):2099-2106[7]Donnell K A, Mendez E R. Experimental study of scattering from characterized random surfaces[J].J. Opt. Soc. Am.1987, 4(7):1194-1205[8]Bourlier C, Berginc G, Saillard J. One and two-dimension shadowing functions for height and slope stationary uncorrelated surface in the monostatic and bistatic configuration[J].IEEE Trans. on Antennas Propagat.2002, 50(2):312-324[9]Bourlier C, Saillard J, Berginc G. The shadowing function. Prog. Electromagn. Res., 2000, 27: 225-287.[10]郭立新, 吴振森. 考虑海谱分布的动态分形海面的电磁散射. 电子学报, 2001, 29(9): 1287-1289.[11]Thorsos E I. Acoustic scattering from a Pierson -Moskowitz sea surface[J].J. Acoust. Soc. Am.1990, 88(1):335-349[12]Bourlier C, Berginc G, Saillard J. Bistatic scattering coefficient from one- and two- dimensional randomly rough surface using the stationary phase and scalar random approximation with shadowing effect: comparisons with experiments and application to the sea surface[J].Waves in Random Media.2001, 11(1):119-147[13]Zavorotny V U, Voronovic A G. Two-scale model and ocean radar Doppler spectra at moderate and low-grazing angles. IEEE Trans. on Antennas Propagat., 1998, 36(1): 84-92.
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