Study on electromagnetic backscattering and Doppler spectrum of a moving spherical target above time-varying sea surface

被引：6

作者：

Guo Lixin ^{[1
]}

Wang YunHua ^{[1
]}

Wu ZhenSen ^{[1
]}

机构：

[1] Xidian Univ, Sch Sci, Xian 710071, Peoples R China

来源：

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2008年 / 51卷 / 03期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

sea surface; reciprocity theorem; Physical Optics method; electromagnetic scattering; Doppler spectrum;

D O I：

10.1007/s11433-008-0033-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The surface electric current of the sea surface and the first-order scattering field from the spherical target were obtained by employing Physical Optics method and Mie theory, respectively. The backscattering field of the time-evolving sea surface was calculated by using Kirchhoff Approximation. Meanwhile, by taking the advantage of a newly developed technique that utilizes the reciprocity theorem, the difficulty in formulating the secondary coupling scattering fields from the spherical target above the sea surface was reduced. The dependence of the secondary coupling backscattering field on the size and the position of the spherical target was discussed, and the characteristic of the Doppler spectrum of the composite backscattering field with different incident angles was analyzed in detail.

引用

页码：269 / 281

页数：13

共 21 条

[1]

BASS FG, 1968, IEEE T ANTENN PROPAG, VAP16, P554, DOI 10.1109/TAP.1968.1139243

[2] Measurements of L-band inland-water surface-clutter Doppler spectra [J].