概括
脉冲连贯多普勒风激光雷达 (CDWL) 现在可以在风力测量的同时检索气溶的光学特性. 本研究详细介绍了校准和错误分析,改进了气溶传输和雾监测数据.
科学领域:
- 大气科学 大气科学
- 遥感 遥感 遥感 遥感
- 光学物理学的光学物理学
背景情况:
- 连贯多普勒风力激光器 (CDWL) 是风力分析的一个关键工具.
- 使用CDWL检索气溶的光学特性是具有挑战性的,因为流和光束聚焦.
- 准确的气溶光学属性数据对于大气研究至关重要.
研究的目的:
- 综合评估脉冲CDWL的功能和局限性,以检索气溶回散/灭绝系数的配置.
- 引入和验证望远镜焦点功能的自我校准方法.
- 分析气溶光学属性检索中的关键不确定性来源.
主要方法:
- 使用水平观测对望远镜焦点功能的自我校准.
- 审查前进和后退检索方法 (有/没有辅助测量).
- 从载体与噪声比率 (CNR),异质效率,激光雷达常数和激光雷达比率的不确定性分析.
主要成果:
- 望远镜焦点的自我校准方法得到了验证.
- 利达恒定的不确定性在1550nm处在15%以内,随波长而增加.
- 假设激光雷达比率错误对灭绝系数的检索有很大影响,但对回散系数的影响较小.
结论:
- 控制的系统环境对于稳定的异质效率至关重要.
- 脉冲CDWL可以提供有价值的气溶光学性能数据,增强大气运输和雾监测.
- 同时测量风和气溶性能将丰富各种大气应用的数据集.
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