【摘要】 目前的海面电磁散射主要是研究微波段下的情况,本文针对米波段研究了海面多径回波模型.首先计算出米波段下的海水介电常数,通过仿真相关反射系数和瑞利判据,得出在米波段下,海情级六级以下,入射余角小于5度时,散射信号中的镜面反射分量占主要部分,并且可以认为此时的海面是光滑的,得到基于镜面反射的多径模型是适用的.更多还原

【Abstract】 The seasurface scattering theroy was focused on microwave band.The multipath echo model at sea under the VHF band is analyzed.The complex dielectric constant is computed firstly.By simulating the correlative reflection coefficient and Rayleigh criterion,the conclusion is obtained that the specular reflection occupies the main in the scattering signals,the sea surface can be assumed smooth surface,the multipath model based on the specular reflection model is correct under the sea state six and the grazing angle less than five degrees.更多还原