Investigation on global positioning system signal scattering and propagation over the rough sea surface  

作　　者：杨超 郭立新 吴振森 

机构地区：[1]School of Science,Xidian University

出　　处：《Chinese Physics B》2010年第5期241-249,共9页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 60971067);the Specialized Research Fund for the Doctoral Program of Higher Education,China (Grant No. 20070701010)

摘　　要：This paper is devoted to the study of polarization properties, scattering properties and propagation properties of global positioning system （GPS） scattering signal over the rough sea surface. To investigate the polarization and the scattering properties, the scattering field and the bistatic scattering coefficient of modified Kirchhoff approximation using the tapered incident wave is derived in detail. In modeling the propagation properties of the GPS scattering signal in the evaporation duct, the initial field of parabolic equation traditionally computed by the antenna pattern using fast Fourier transform （FFT） is replaced by the GPS scattering field. And the propagation properties of the GPS scattering signal in the evaporation duct with different evaporation duct heights and elevation angles of GPS are discussed by the improved discrete mixed Fourier transform taking into account the sea surface roughness.This paper is devoted to the study of polarization properties, scattering properties and propagation properties of global positioning system （GPS） scattering signal over the rough sea surface. To investigate the polarization and the scattering properties, the scattering field and the bistatic scattering coefficient of modified Kirchhoff approximation using the tapered incident wave is derived in detail. In modeling the propagation properties of the GPS scattering signal in the evaporation duct, the initial field of parabolic equation traditionally computed by the antenna pattern using fast Fourier transform （FFT） is replaced by the GPS scattering field. And the propagation properties of the GPS scattering signal in the evaporation duct with different evaporation duct heights and elevation angles of GPS are discussed by the improved discrete mixed Fourier transform taking into account the sea surface roughness.

关 键 词：GPS signal rough sea surface electromagnetic scattering propagation loss 

分 类 号：P228.4[天文地球—大地测量学与测量工程]