概括
光探测和距离测定 (Lidar) 使用激光脉冲来检测小大气粒子,为雷达提供了光学替代方案. 这项技术分析反射光,以高灵敏度测量大气成分和范围.
科学领域:
- 大气光学和遥感.
- 光学物理和仪器仪表.
背景情况:
- 激光雷达,或光检测和距离测量,作为天气雷达的光学模拟功能.
- 与雷达中使用的微波波长相比,光学波长可以检测出明显较小的大气粒子.
研究的目的:
- 描述激光雷达技术的基本原理和仪器仪表.
- 为了突出Lidar在检测微型大气颗粒方面的能力.
主要方法:
- 使用激光作为电源,通过透镜系统发射强烈的单色光的短脉冲.
- 采用与发射器结合的望远镜来收集反射的大气光.
- 一个窄通波器和光倍增器检测到反射光,隔离传输的频率.
主要成果:
- 证明了Lidar由于其光学波长操作而能够检测非常小的大气颗粒的能力.
- 数据可视化是使用振荡镜实现的,显示信号强度与范围 (A范围).
结论:
- 激光雷达提供了一种灵敏的方法,通过检测细颗粒来进行大气分析.
- 描述的设置允许详细分析大气反向散射.
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