物理学报Issue(7)：468-480,13.DOI:10.7498/aps.62.078403
星载极化相关型全极化微波辐射计天线交叉极化校正技术（II）：校正试验
Antenna cross-polarization correction for spaceborne polarimetric microwave correlation radiometer (II):Correction experiment∗
摘要
Abstract
In this paper, we simulated the earth scene brightness temperature by creating the earth scene data sets and using polarimetric microwave radiative transfer model. On the basis of the fully polarized antenna temperature equation we have derived, the radiometer antenna temperature was also simulated by generating antenna pattern through GRASP9 software. Then by using multiple linear regression method, the M matrix was calculated and the antenna cross-polarization correction for spaceborne polarimetric microwave correlation radiometer was realized. The correction results show that the antenna temperature and earth scene brightness temperature have a linear relationship. Antenna cross-polarization influences the orthogonal channels brightness temperature seriously, especially the vertical polarization brightness temperature. The antenna cross-polarization for each channel has been effectively reduced. Residual cross-polarization is better than−23 dB and the polarization purity is greater than 99.5%. Correction of using M matrix to eliminate the antenna cross-polarization is feasible. It has been proved that this technique is most appropriate for the final correction of antenna cross-polarization for the spaceborne polarimetric microwave correlation radiometer on orbit.关键词
全极化微波辐射计/天线交叉极化/天线温度方程/M矩阵Key words
polarimetric microwave radiometer/antenna cross-polarization/antenna temperature equation/M-matrix引用本文复制引用
陆文,严卫,艾未华,施健康..星载极化相关型全极化微波辐射计天线交叉极化校正技术（II）：校正试验[J].物理学报,2013,(7):468-480,13.基金项目
通信信息控制和安全技术重点实验室基金资助的课题 （）
