指数型分布粗糙地面宽带后向电磁散射的FDTD研究

doi:10.3976/j.issn.1002-4026.2015.04.016

Abstract

Abstract: We simulate exponential distribution rough land surface with Monte Carlo method.We also address wideband electromagnetic scattering of rough land surface corresponding to Gaussian pulse incident wave by finitedifference timedomain (FDTD) method.Backward scattering coefficients of different frequency response are obtained through numerical calculation.We further analyze the influences of correlation length, rootmeansquare of height fluctuation, soil moisture and incident angle variations on backward scattering coefficient.We eventually acquire wideband backward electromagnetic scattering characteristics of exponential distribution rough land surface.

Key words: electromagnetic scattering, FDTD, backward scattering coefficient, Gaussian pulse wave, rough land surface

CLC Number:

TN011

WU Jian, REN Xincheng, ZHU Xiaomin. FDTD research of broadband backward electromagnetic scattering from exponential distribution rough land surface[J].SHANDONG SCIENCE, 2015, 28(4): 83-88.

References

［1］任新成，郭立新，焦永昌.雪层覆盖的粗糙地面与上方矩形截面柱复合电磁散射的时域有限差分方法研究［J］.物理学报，2012,61(14):144101 ［2］张连波，郭立新，苟雪银，等.三层粗糙面电磁散射的矩量法研究［J］.西安电子科技大学学报：自然科学版，2013,40(6):147-154 ［3］WANG R, GUO L X, MA J. Hybrid method for investigation of electromagnetic scattering from conducting target above the randomly rough surface［J］. Chinese Physics B，2009,18(4):1503-1511 ［4］ SULTANSALEM A K,LEONAR TYLER G. Validity of the kirchhoff approximation for electromagnetic wave scattering from fractal surfaces［J］. IEEE trans geosci remote Sensing 2004, 42(9):1860-1870 ［5］樊君，雷振亚，谢拥军,等.半空间目标宽带电磁散射特性的快速插值方法［J］.电波科学学报，2012,27(1):84-89 ［6］黄纪军，粟毅，计科峰,等.地面复杂目标宽带电磁散射特性分析［J］.微波学报，2005,21(2):8-11 ［7］曹秋生，刘贺军，马建超,等.基于超宽带雷达的丛林目标探测无人机系统分析［J］.中国电子科学研究院学报，2012,7(4):351-355 ［8］魏为民，唐振军.UWB超宽带无线通信技术研究［J］.计算机工程与设计，2008,29(11):2748-2750 ［9］金亚秋，李中新.结合谱积分加速法的前后向迭代法数值计算分形粗糙介质面的双站散射和透射［J］.电子学报，2002,30(11):1648-1653 ［10］李杰.随机粗糙面及其与目标复合电磁散射有限元与高频方法建模研究［D］.西安：西安电子科技大学，2012 ［11］朱小敏，任新成，郭立新.指数型分布粗糙地面电磁散射的FDTD研究［J］.上海航天，2011,28(4):1-6 ［12］ YEE K S. Numerical solution of initial boundary value problems involving Maxwell’s equation in isotropic media［J］.IEEE Transactions antennas propagate, 1966，14(4)：302-307 ［13］葛德彪，闫玉波.电磁波时域有限差分方法［M］.3版西安：西安电子科技大学出版社，2011 ［14］ WANG J R, SCHMUGGE T J. An empirical model for the complex dielectric permittivity of soils as a function of water content［J］.IEEE Transaction on geoscience and remote sensing, 1980,18(4)：288-295 ［15］ TSANG L，KONG J A，DING K H, et al. Scattering of electromagnetic waves, Numerical simulations［M］.New York: John Wiley and Sons,2004 ［16］朱小敏，任新成. 随机粗糙地面的宽带电磁散射研究［J］.河南科学，2014,32(8):1457-1461

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FDTD research of broadband backward electromagnetic scattering from exponential distribution rough land surface

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