红外与激光工程, 2017, 46 (12): 1217007, 网络出版: 2018-01-19  

通道式偏振遥感器偏振解析方向测量误差分析及验证

Measurement error analysis and validation of the angle of polarizer for channel-type polarization remote sensor
作者单位
中国科学院安徽光学精密机械研究所, 安徽 合肥 230031
摘要
通道式遥感器的偏振测量核心部件通常是相似的, 即不同偏振解析方向的检偏器组合进行探测。同一系统中不同偏振解析方向之间的相对角度误差成为影响偏振遥感探测精度的重要因素之一。文中对该相对角度误差的影响以及提高测量精度的方法进行了研究。首先, 分析了相对角度误差对偏振测量精度的影响; 其次, 对测量过程中存在的误差源进行了仿真分析及实验对比分析, 根据该设计具体的实验参数和实验方法, 验证仿真结果的正确性; 最后, 通过通道式遥感器偏振实测结果验证其测量的可靠性。系统偏振度测量值与可调偏振度光源输出的偏振度参考值比对, 最大平均偏差为0.735 3%; 与CE318测量比对的最大平均偏差为0.036。实验结果满足实际使用的偏振测量精度要求, 说明偏振解析方向测量方法选择合理, 可以为偏振遥感器的装调和高精度定标提供参考。
Abstract
The core component of the polarization measurement of the channel-type remote sensor is usually the similar, that is, the polarization detection is carried out by using the analyzer in different polarization direction. The relative angular error of different polarizers is an important element affecting the measurement accuracy of polarization. Firstly, the influence of relative angle error among the angle of polarizer on the accuracy of polarization measurement was analyzed. Secondly, the error sources in the measurement process were simulated and analyzed. According to the simulation results, the specific experimental parameters and methods were designed to verify the simulation results. Finally, the comparison of experiment results, which validated the measurement reliability, show that the maximum average deviation between the measured polarization degree of the system and the reference value of the reference source with variable polarization degree (VPOLS-||) is 0.735 3%, and the maximum average deviation from the CE318 measurement is 0.036. The experimental results satisfy the real polarization measurement accuracy requirement, which indicates the method of polarization analysis direction measurement is reasonable and provides a powerful support for the high precision calibration of the polarization sensor.

范慧敏, 裘桢炜, 袁银麟, 康晴, 洪津. 通道式偏振遥感器偏振解析方向测量误差分析及验证[J]. 红外与激光工程, 2017, 46(12): 1217007. Fan Huimin, Qiu Zhenwei, Yuan Yinlin, Kang Qing, Hong Jin. Measurement error analysis and validation of the angle of polarizer for channel-type polarization remote sensor[J]. Infrared and Laser Engineering, 2017, 46(12): 1217007.

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