多波段多极化SAR遥感数据的二维周期介质模型

提出了 SAR遥感数据的二维周期介质半空间理论模型。由于二维周期介质中电磁场的特征向量并不限于入射场的极化方向 ,因此可以考虑同种极化和交叉极化的散射。模型参数简单 ,适用范围广 ,数值模拟结果能较全面地反映多波段、多极化 SAR遥感数据的特性。特别适合于利用种类比较有限的 SAR遥感数据的地物参数反演问题

Two-dimensionally Periodic Medium Model for Multi-band Multi-polarized SAR Remote Sensing Data

A theoretical model of two\|dimensionally periodic medium is introduced for SAR remote sensing data.The region under ground surface is modeled as half space of two\|dimensionally periodic medium.Because the polarized direction of the electromagnetic eigenvector in two\|dimensionally periodic medium are not necessary the same as that of incidence,the scattering fields in free space is generally arbitrary polarized.Therefore,both like and cross scatters can be considered by this model.The simulation results of dependence of incidence direction,polarization and frequency,in addition to the complex permittivity of ground,are presented here.With relatively simple parameters,this model has wide potential usage.The numerical simulation based on the model can show almost all aspects of multi\|band multi\|polarized SAR remote sensing data.This model is specially suitable for surface parameter inverse problem based on SAR remote sensing data which kind is very limited.