摘要
海面粗糙度对电磁波极化信号有显著影响。应用分型二维海面模型模拟了海面的起伏形态,再通过极化散射矩阵﹑斯托克斯矩阵以及极化电磁波散射理论,对大量的散射海面进行模拟研究后得出,电磁波的角偏移只与受照射的雷达入射角相关,与海面的粗糙度及主浪波长均无关,进一步分析得出电磁波的偏心率仅在主浪波长改变的时刻改变。
Ocean surface roughness have very great impact on the polarization electromagnetic wave signals.In this paper,two-dimensional fractal surface model has been used to simulate the fluctuation form of the ocean.Then utilized the polarization scattering matrix,Stokes matrix and the wave scattering theory,analysing the simulated ocean surface,it is concluded that the shift angle is only affected by incident angle of SAR,not affected by ocean surface roughness and the wavelength of the main wave.Furthermore,the electromagnetic wave varies with the shift of the main wave.
出处
《电子测量与仪器学报》
CSCD
2010年第12期1137-1141,共5页
Journal of Electronic Measurement and Instrumentation
基金
国家科技支撑计划项目(编号:2008BAC35B03)资助项目
863计划(编号:2008AA12120142)资助项目
中国科学院遥感应用研究所
北京师范大学遥感科学国家重点实验室开放基金(编号:08Y01563KZ)资助项目
关键词
极化
分型
海面
SAR
Polarization
Fractal
Ocean Surface
SAR
