Polarization analysis and corrections of different telescopes in polarization lidar
Polarization analysis and corrections of different telescopes in polarization lidar
复制标题
偏振激光雷达中不同望远镜的偏振分析与校正
DOI：
10.1364/ao.54.000389
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发表时间：
2015-01
期刊：
影响因子：
1.9
通讯作者：
Wei, Xin
中科院分区：
文献类型：
--
作者：
Hua, Dengxin;Yan, Leijie;Hou, Xiaolong;Wei, Xin
偏振激光雷达中的望远镜通常会修改返回信号的输入偏振，因此望远镜可能会显着影响气溶胶的去偏振估计，并给偏振激光雷达测量引入误差。该误差无法通过传统的校准常数来校正。我们提出了一种校正望远镜偏振效应的方法。基于Mueller形式分析了望远镜的偏振效应，并提出了气溶胶去偏振参数的校正算法。激光雷达中经常选择牛顿望远镜和卡塞格伦望远镜作为接收器。建立了它们的极化模型，并计算了穆勒矩阵。这些矩阵的组成取决于波长、入射光的入射角和表面特性。激光雷达中望远镜的偏振影响可以通过参数进行校准，并讨论了不同望远镜的影响。牛顿望远镜引起的偏振串扰是明显的。消偏参数随镀膜和波长变化很大，计算并给出了这些参数。而卡塞格伦望远镜的串扰要小得多，误差可以达到10−3的水平，可以忽略不计。本文提出的方法还可以通过考虑所有光学设备而不仅仅是望远镜来升级。
Telescopes in polarization lidar often modify the input polarization of the return signal, such that the telescope may significantly impact the depolarization estimates of aerosol and introduce error to the polarization lidar measurements. The error cannot be corrected by a traditional calibration constant. We present a method to correct the polarization effect of the telescope. We analyze the polarization effect of a telescope on the basis of the Mueller formalism, and introduce an algorithm for correcting the depolarization parameter of aerosol. A Newton telescope and a Cassegrain telescope are often chosen as the receiver in lidar. Their polarization models are established, and the Mueller matrices are calculated. The components of these matrices are dependent on wavelength, incident angle of the incoming light, and surface properties. The polarization impact of the telescope in lidar can be calibrated by a parameter, and the effects of different telescopes are discussed. The polarization crosstalk induced by the Newton telescope is obvious. The depolarization parameters change greatly with coating and wavelength, and they are calculated and presented. Whereas the crosstalk of a Cassegrain telescope is much smaller, the error can reach the level of 10−3 and can be negligible. The method presented in this paper could also be upgraded by taking into account all of the optical devices instead of only the telescope.
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影响因子：
6.5
作者：
J. Almeida
通讯作者：
J. Almeida
DOI：
10.1364/josaa.22.000539
发表时间：
2004-10
期刊：
Journal of the Optical Society of America. A, Optics, image science, and vision
影响因子：
--
作者：
H. Socas-Navarro
通讯作者：
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影响因子：
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作者：
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通讯作者：
M. Hayman;J. Thayer
影响因子：
2.2
作者：
Alvarez, J. M.;Vaughan, M. A.;Winker, D. M.
通讯作者：
Winker, D. M.
影响因子：
1.9
作者：
G. Gimmestad
通讯作者：
G. Gimmestad