【摘要】 针对GNSS-R海洋遥感探测研究中,传统方法只能对镜面反射点附近海域进行分析,无法获取二维海面反射特征的问题,提出一种使用SAR对海面进行成像的方法:利用导航卫星作为信号源,海面反射的GNSS-R信号作为回波信号,使用背向投影算法进行成像。仿真结果表明:该方法能够对点目标和随机海面进行成像,得到二维海面电磁反射能量分布;证明了利用GNSS-R信号进行海面SAR成像的可行性。更多还原

【Abstract】 Aiming at the problem that traditional methods can only analyze the sea area near specular points,and it is difficult to get the reflection characteristics of sea surface with two dimensions in GNSS-R marine deteciton of remote sensing,the paper proposed an imaging method of sea with SAR:the navigation satellites were used as signal source,GNSS-R signals were used as echo,and BP algorithm was used to carry out the imaging.Simulation results showed that the proposed method could image the point targets and random sea surface,and obtain the energy distribution of electromagnetic reflection of sea surface with two dimensions,which proved the feasibility of the SAR imaging method of sea using GNSS-R signals.更多还原