多线阵分焦平面型偏振遥感探测系统的标定

为满足偏振遥感系统对探测精度的要求，采用多线阵分焦平面型偏振探测系统分析了消光比对偏振探测精度的影响，并构建了偏振辐射传递模型。介绍了分焦平面型偏振仪器的结构，结合国内外微型偏振片的加工技术，采用多线阵微型偏振片替代微偏振片马赛克阵列的探测方法分析了金属线栅微偏振片消光比对偏振探测的影响，推导了光学系统及非理想偏振片的偏振传递矩阵，根据偏振辐射传递理论构建了偏振探测系统的校正模型。基于校正模型制定了相应的参数标定方案，为实验室偏振辐射标定提供了理论基础。模拟及实验结果表明，在受限于设备稳定性的情况下，系统探测精度可达到0.5%，满足偏振探测精度要求。

Abstract

To meet the detection accuracy requirement of the polarization remote sensing system, a polarization detection system is used, whose focal plane is divided by multi-linear array polarizers. The effect of the extinction ratio on the polarization detection accuracy is analyzed, and a polarization radiation transfer model is constructed. The structure of the divided focal plane polarization instrument is introduced. By combining the micro-polarizer processing technologies both in China and abroad, a detection method is chosen, which uses the multi-linear micro-polarizers to replace the micro-polarizer mosaic array. The influence of the extinction ratio of the metal wire grating micro-polarizer on the detection accuracy is discussed. The polarization transfer matrices of the optical system and the non-ideal polarizer are derived. According to the polarization radiation transfer theory, a calibration model for the polarization detection system is constructed, and a corresponding parameter calibration scheme based on the calibration model is developed, which provides a theoretical basis for the polarizing radiation calibration in laboratory. The simulation and experimental results show that the detection accuracy of the system influenced by equipment stability is 0.5%, which can meet the accuracy requirement of the polarization detection.

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张海洋, 张军强, 杨斌, 颜昌翔. 多线阵分焦平面型偏振遥感探测系统的标定[J]. 光学学报, 2016, 36(11): 1128003. Zhang Haiyang, Zhang Junqiang, Yang Bin, Yan Changxiang. Calibration for Polarization Remote Sensing System with Focal Plane Divided by Multi-Linear Array[J]. Acta Optica Sinica, 2016, 36(11): 1128003.

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