Explicit description of polarization coupling in lidar applications.
Explicit description of polarization coupling in lidar applications.
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DOI：
10.1364/ol.34.000611
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发表时间：
2009-03
期刊：
影响因子：
3.6
通讯作者：
M. Hayman;J. Thayer
中科院分区：
文献类型：
--
作者：
M. Hayman;J. Thayer
去偏振激光雷达需要区分后向散射光的偏振和非偏振分量。这可以通过仅两次偏振测量来完成。然而，去极化激光雷达中的平行和交叉极化通道并不总是被视为独立的，因为系统光学元件会导致这些通道之间的耦合，并且发射机和接收机极化平面很少完全对齐。校准常数虽然在某些情况下是合理的近似值，但并不能完全描述接收器的物理特性和正交偏振模式之间耦合的可能性。我们提出了一个一般的接收机设计的分析，并介绍了一种算法，用于解耦接收到的数据，它只需要通常记录在去偏振激光雷达测量的平行和交叉偏振数据。
Depolarization lidar requires discrimination of received power in polarized and unpolarized components of backscattered light. This can be accomplished with only two polarization measurements. However, parallel- and cross-polarization channels in depolarization lidar cannot always be regarded as independent, because system optical components can cause coupling between these channels and transmitter and receiver polarization planes are rarely perfectly aligned. Calibration constants, while in some instances reasonable approximations, do not fully describe the physics of the receiver and potential for coupling between orthogonal polarization modes. We present an analysis of a general receiver design and introduce an algorithm for decoupling the received data, which only requires the parallel- and cross-polarization data typically recorded in depolarization lidar measurements.