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双尺度动态分形粗糙海面的电磁散射及多普勒谱研究 被引量:30

Study on the electromagnetic scattering and Doppler spectra from two-scale time-varying fractal rough sea surface
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摘要 利用更为符合海面实际散射场计算的双尺度法分析并计算了一维动态分形粗糙海面的后向散射截面 ,同时与微扰法有关结果进行了比较 .研究了动态分形海面后向散射信号的多普勒谱分形特征 ,分析了不同极化状态下后向散射截面和多普勒谱谱宽随入射角及分维的变化规律 。 In this paper, the two-scale model method, which is much applicable to the computation of the electromagnetic scattering field from the rough sea surface, is used to calculate the backscattering cross-section of the one-dimensional time-varying fractal rough sea surface, the related results are also compared with those calculated by small perturbation method. The fractal characteristic of the Doppler spectra of the backscattering signal from the sea surface is studied, the dependances of the the backscattering cross-section and the width of Doppler spectra on the incident angle and fractal dimension are also analyed. Finally, the relationship between the central frequency of the Doppler spectra and the Bragg resonant frequency is discussed in detail.
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2005年第1期96-101,共6页 Acta Physica Sinica
基金 国家自然科学基金 (批准号 :60 10 10 0 1) 高等学校优秀青年教师教学和科研奖励基金资助的课题~~
关键词 粗糙海面 多普勒谱 后向散射 电磁散射 谱宽 中心频率 谐振频率 截面 一维 微扰法 two-scale model fractal rough sea surface electromagnetic scattering Doppler spectra
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参考文献14

  • 1郭立新,吴振森.二维分数布朗运动(FBM)随机粗糙面电磁散射的基尔霍夫近似[J].物理学报,2001,50(1):42-47. 被引量:15
  • 2Ulaby F T et al 1982 Microwave Remote Sensing. Vol 2 chap 12(Addison-Wesley Publishing).
  • 3Fung A K 1994 Microwave Scattering and Emission Models and Their Applications (Artech House, INC).
  • 4Johnson J T et al 1998 IEEE Trans. Antennas Propagat. 36 72.
  • 5Zavorotny V U et al 1998 IEEE Trans. Antennas Propagat. 36 84.
  • 6FungAK et al 1985 J. Opt. Soc. Am. A22274.
  • 7Franceschetti F et al 1999 Radio Science 34 1043.
  • 8Jaggard D L et al 1987 J. Opt. Soc. Am. A 7 1131.
  • 9Guo L X and Wu Z S 2000 IEE of Electronic Letters 36 1810.
  • 10Thorsos E I 1990 J. Acoust. Soc. Am. 88 335.

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