Simple approach to predict APD/PMT lidar detector performance under sky background using dimensionless parametrization
Simple approach to predict APD/PMT lidar detector performance under sky background using dimensionless parametrization
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DOI：
10.1016/j.optlaseng.2005.07.010
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发表时间：
2006-08-01
影响因子：
4.6
通讯作者：
Ahmed, S
中科院分区：
文献类型：
--
作者：
Agishev, R;Gross, B;Ahmed, S
本文提出了一种简单的方法来预测APD/PMT（雪崩光电二极管/光电倍增管）激光雷达探测器在剩余天空光背景下的探测性能。通过将所有相关的光电探测器噪声源归一化为量子噪声，得到了信噪比下降、阈值灵敏度增加和作用距离减小的定量表达式。应用形式主义的任何激光雷达光电探测器在紫外线，可见光和近红外光谱区域，并进行比较分析的PMT和APD的能力作为最好的光电探测器的紫外线（UV），可见光（维斯）和近红外（NIR）激光雷达，我们利用一组光谱特性，是建立从一个信封的个人PMT和APD组件的响应。在此基础上，对强背景条件下的系统性能进行了一般分析，并对各光谱区的探测器使用给出了实用建议。无量纲的形式主义和广义探测器光谱模型，使我们的分析几乎可以应用到任何激光雷达接收器在非常不同的信号/背景情况下工作。(c)2005爱思唯尔有限公司保留所有权利。
In this paper, we developed a simple approach to predict the APD/PMT (avalanche photodiode/photomultiplier) lidar detector performance in the presence of residual skylight background. By normalizing all relevant photodetector noise sources to the quantum noise, we obtain quantitative expressions for the degradation of the signal-to-noise ratio (SNR), the increasing threshold sensitivity of and decreasing lidar operation range. To apply the formalism to any lidar photodetectors operating in the ultra violet, visible and near-infrared spectral regions and to perform a comparative analysis of PMT and APD capabilities as the best photodetectors for ultra-violet (UV), visible (Vis) and near infra-red (NIR) lidar, we utilize a set of spectral characteristics that are built from an envelope of individual PMT and APD component responses. On this basis, the general analysis of system performance under intense background conditions is developed, and practical recommendations on detector use for each spectral region are given. The dimensionless formalism and the generalized detector spectral models used allows our analysis to be applied to nearly any lidar receiver operating over very different signal/background situations. (c) 2005 Elsevier Ltd. All rights reserved.