中国物理B ›› 2010, Vol. 19 ›› Issue (5): 54101-054101.doi: 10.1088/1674-1056/19/5/054101
杨超, 郭立新, 吴振森
Yang Chao(杨超)†, Guo Li-Xin(郭立新), and Wu Zhen-Sen(吴振森)
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 with 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 with using fast Fourier transform (FFT) is replaced by the GPS scattering field. And the propagation properties of 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 with taking into account the sea surface roughness.
中图分类号: (Remote sensing in exploration geophysics)