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改进的一维分形模型在海面电磁散射中的应用
  • 期刊名称：电子学报, 35(3), pp.478-483，2007.
  • 时间：0
  • 分类：TN011[电子电信—物理电子学]
  • 作者机构：[1]西安电子科技大学理学院,陕西西安710071
  • 相关基金：国家自然科学基金（No.60571058）;国防科技预研基金（No.51477090104DZ0101,51403020505DZ0111）;西安电子科技大学创新基金项目
  • 相关项目：实际海背景中目标的复合电磁散射与预报模型研究
关键词： 改进分形模型, 海面, 电磁散射, 基尔霍夫近似, fractal model, sea surface, electromagnetic scattering, Kirchhoff approximation
中文摘要：

本文中提出了一种改进的一维分形海面模型，其表面谱在空间波数小于基波波数及大于基波波数时分别满足正幂率关系和负幂率关系，在不同风速时分形模型的表面谱和PM谱吻合较好．在满足Kirchhoff近似条件下推导了改进分形模型的散射系数及散射强度系数的计算公式并进行了数值计算，比较了改进分形海面模型和经典分形海面模型下散射强度系数角分布并讨论了它们随入射频率和海上风速的变化．

英文摘要：

An improved 1 D fractal sea surface model is proposed, the fractal spectrum of this model satisfies the positive and negative power law spectrum for the spatial wave number is smaller and larger than the fundamental wave number, respectively. The fractal spectrum of this model shows good agreement with PM spectrum for the different windspeed. Based on the Kirchhoff approximation, the scattering coefficient and the scattering intensity coefficient of this new model are also derived and calculated, the angular distributions of scattering intensity coefficient of the improved fractal sea model are compared with those of the conventional model for different incident frequency and windspeed.

同期刊论文项目
实际海背景中目标的复合电磁散射与预报模型研究
期刊论文 71 会议论文 19 获奖 1
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