具有纹理特征的二维高斯粗糙面单双站极化散射

doi:10.3969/j.issn.1001-2400.2011.06.012

J4 ›› 2011, Vol. 38 ›› Issue (6): 75-81+102.doi: 10.3969/j.issn.1001-2400.2011.06.012

具有纹理特征的二维高斯粗糙面单双站极化散射

刘伟;郭立新;王安琪

(西安电子科技大学理学院，陕西西安 710071)

收稿日期:2010-08-31 出版日期:2011-12-20 发布日期:2011-11-29
通讯作者: 刘伟
作者简介:刘伟(1979-)，男，西安电子科技大学博士研究生，E-mail: liuwei@mail.xidian.edu.cn
基金资助:
国家自然科学基金资助项目(60971067);高等学校博士学科点专项科研基金资助项目(20100203110016);中央高校基本科研业务费专项资金资助项目

Study of monostatic and bistatic polarimetric scattering from the two-dimensional Gauss rough surface characterized by textures

LIU Wei;GUO Lixin;WANG Anqi

(School of Science, Xidian Univ., Xi'an 710071， China)

Received:2010-08-31 Online:2011-12-20 Published:2011-11-29
Contact: LIU Wei

摘要/Abstract

摘要：

提出了具有纹理特征的二维高斯粗糙面并研究了其极化散射特性．发现将高斯粗糙面在两个方向上的相关长度的比值取到足够大，能从粗糙面上直观地观察到纹理特征，并且可以利用傅里叶变换中的角度旋转得到任意的纹理走向．通过粗糙面的小面元积分，推导出椭圆极化入射时笛卡尔坐标系下的散射场，并得到了不同纹理特征高斯粗糙面的极化雷达散射截面．数值结果显示了入射角、纹理角、相关长度以及高度起伏均方根对于纹理粗糙面极化散射特性的影响．

关键词: 极化, 粗糙面, 雷达散射截面, 纹理, 相关长度

Abstract:

A two-dimensional Gauss rough surface characterized by textures is presented and the properties of polarimetric scattering from the surface are studied. The rough surface characterized by textures can be obtained through the angle rotating in Fourier transform with the ratio of the two correlation lengths large enough. The scattered field is derived in the Cartesian coordinate system through the integration of scattering facets with the elliptic polarized incidence wave. The polarized radar cross section (RCS) from the Gaussian rough surface characterized by textures is computed. Several numerical results exhibit the influence of incident angle, texture angle, correlation length and root mean square height on the polarimetric scattering from the texture rough surface.

Key words: polarization, rough surface, radar cross-section, texture, correlation length

中图分类号:

TN011

刘伟;郭立新;王安琪. 具有纹理特征的二维高斯粗糙面单双站极化散射[J]. J4, 2011, 38(6): 75-81+102.

LIU Wei;GUO Lixin;WANG Anqi. Study of monostatic and bistatic polarimetric scattering from the two-dimensional Gauss rough surface characterized by textures[J]. J4, 2011, 38(6): 75-81+102.

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具有纹理特征的二维高斯粗糙面单双站极化散射

Study of monostatic and bistatic polarimetric scattering from the two-dimensional Gauss rough surface characterized by textures

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