极化散射的各向异性分析及应用

发布时间：2018-05-12 08:09

本文选题：极化分解 + 电磁散射　；参考：《复旦学报(自然科学版)》2017年05期

【摘要】：分析典型极化散射机制随着视角等参数变化时产生的各向异性对从物理角度解译遥感图像具有重要意义.为了更好地从散射矩阵中提取出具有一定物理含义的极化信息,分析极化参数的各向异性特征,建立了任意取向散射体的电磁散射模型,模拟其在Cameron极化空间中的变化轨迹分布.其次,基于子孔径的方法,用无人机合成孔径雷达(UAVSAR)数据进行实验验证,计算出了取向角、z参数与视角的关系,与桥体的微扰法(Small Perturbation Method,SPM)二次散射仿真模型的计算结果吻合.
[Abstract]:It is very important to analyze the anisotropy of the typical polarization scattering mechanism with the variation of the parameters such as the angle of view for the interpretation of remote sensing images from the physical point of view. In order to extract the polarization information with certain physical meaning from the scattering matrix, the anisotropic characteristics of polarization parameters are analyzed, and the electromagnetic scattering model of arbitrarily oriented scatterers is established. The trajectory distribution in Cameron polarization space is simulated. Secondly, based on the method of sub-aperture, the relationship between the angle of orientation and the angle of view is calculated by using the UAV SAR data of UAV, and the results are in agreement with the simulation results of the small Perturbation method (SPM) secondary scattering simulation model of the bridge.
【作者单位】：复旦大学电磁波信息科学教育部重点实验室;中国工程物理研究院电子工程研究所;
【基金】：国家自然科学基金(61571132,61571134)
【分类号】：TP751

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