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非理想透镜组的偏振效应引起偏振测量系统的测量矩阵改变,导致系统最佳配置漂移。为了最大化气溶胶偏振探测仪的信噪比,利用Jones矩阵的方法计算前置光学透镜组的起偏度,并分别以系统分析矩阵的条件数和参数Tr(BBT)为优化参数对检偏器的放置角度进行优化。经过优化,得到检偏器的最佳方位角,在670 nm通道系统分析矩阵的条件数由1.836 0降为1.689 4,在1 641 nm通道系统分析矩阵的条件数由1.977 7降为1.771 4。结果表明,两种优化方法的结果基本一致,经过优化之后两个偏振测量通道的信噪比都提升10%左右。
The polarization effect of the non-ideal lens set causes the measurement matrix of the polarization measurement system to change, resulting in the optimal system configuration drift. In order to maximize signal-to-noise ratio of the aerosol polarimeter, the skewness of the pre-ophthalmic lens was calculated by using the Jones matrix method. The parameters of the system analysis matrix and parameters Tr (BBT) The placement of the device is optimized. After optimization, the best azimuth angle of the analyzer was obtained. The condition number of the matrix analysis system at 670 nm decreased from 1.836 0 to 1.689 4, and the condition number of the system analysis matrix at 1 641 nm decreased from 1.977 7 to 1.771 4. The results show that the results of the two optimization methods are basically the same. After optimization, the signal-to-noise ratio of the two polarization measurement channels increases about 10%.