首页 | 本学科首页   官方微博 | 高级检索  
     

考虑海谱分布的动态分形海面的电磁散射
引用本文:郭立新,吴振森.考虑海谱分布的动态分形海面的电磁散射[J].电子学报,2001,29(9):1287-1289.
作者姓名:郭立新  吴振森
作者单位:西安电子科技大学理学院,陕西西安 710071
基金项目:高等学校优秀青年教师教学,科研奖励基金资助项目
摘    要:本文采用考虑了Pierson-Moskowitz谱的归一化带限Weierstrass分形函数来模拟动态分形海面.利用基尔霍夫近似研究了该粗糙面的电磁散射,讨论了后向散射截面随入射角的变化,给出了后向散射截面时间序列的分维与分形海面分维间的关系.计算了散射场幅值,结果表明该分形海面散射场幅值分布服从K-分布.

关 键 词:分形海面  基尔霍夫近似  电磁散射  
文章编号:0372-2112(2001)09-1287-03
收稿时间:2000-07-18

Electromagnetic Scattering from Time-Varying Fractal Sea Surface Considering the Distribution of Sea Power Spectrum
GUO Li-xin,WU Zhen-sen.Electromagnetic Scattering from Time-Varying Fractal Sea Surface Considering the Distribution of Sea Power Spectrum[J].Acta Electronica Sinica,2001,29(9):1287-1289.
Authors:GUO Li-xin  WU Zhen-sen
Affiliation:School of Science,Xidian University,Xi'an,Shanxi 710071,China
Abstract:In this paper,a normalized band-limited Weierstrass fractal model is presented for modeling the time-varying rough sea surface. In particular, the Pierson-Moskowitz spectrum is incorporated into this model to represent a fully developed sea surface. The solution of the scattering field from this fractal surface is studied based on Kirchhoff theory, and the effect of the incident angle on the backscattering cress section is discussed. The relationship between the fractal dimension of the time series of the the backscattering cress section and the fractal dimension of the sea surface is given. The numerical results of the scattering fields show that the distribution of the scattering amplitude satisfies the K-distribution.
Keywords:fractal sea surface  Kirchhoff approximation  electromagnetic scattering
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《电子学报》浏览原始摘要信息
点击此处可从《电子学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号