对于用于测量大气温度和风的Lidar进行比较研究
Applied optics
|September 14, 2023
概括
这项研究比较了大气温度和风的激光雷达测量技术. 单光子测量不确定性揭示了Cabannes散射,雷利逆转,旋转拉曼和激光诱导光方法之间的实际差异.
科学领域:
- 大气遥感是指大气中的遥感.
- 光学物理学的光学物理.
- 气象学 天气学
背景情况:
- 大气温度和风力测量对于天气预报和气候研究至关重要.
- 激光雷达 (光探测和测距) 系统提供了用于大气概况的遥感功能.
- 激光雷达系统的测量不确定性主要受到信号噪声比 (SNR) 的影响.
研究的目的:
- 引入和利用单光子测量不确定性作为评估激光雷达性能的关键指标.
- 为了比较不同激光雷达技术的实际有效性:卡班纳斯散射 (CS),雷利逆转 (RI),旋转拉曼 (RR) 和激光诱导光 (LIF).
- 为特定大气测量应用的激光雷达系统的选择和接收器设计提供指导.
主要方法:
- 计算温度 (T) 和视线 (LOS) 风 (V) 测量的单光子测量不确定性.
- 分析每个激光雷达技术收到的光计数的SNR.
- 在CS,RI,RR和LIF中比较衍生的单光子测量不确定性.
主要成果:
- 单光子测量不确定性量化了激光雷达测量方法固有的有效性.
- 在CS,RI,RR和LIF之间存在明显的实践差异.
- 选择激光雷达技术和接收器设计显著影响测量不确定性.
结论:
- 单光子测量不确定性为比较激光雷达测量技术提供了一个标准化的优点数字.
- 了解这些差异对于优化激光雷达系统对大气温度和风力检索的性能至关重要.
- 这项研究有助于选择合适的激光雷达技术,并为目标应用设计有效的接收系统.
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