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首页> 外文会议>Chemical, Biological, Radiological, Nuclear, and Explosives Sensing XVI >Single Wavelength Lidar Retrieval Algorithm of Particulate Matter Concentration using CELiS (Compact Eyesafe Lidar System), a 1.5 μm Elastic Lidar System
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Single Wavelength Lidar Retrieval Algorithm of Particulate Matter Concentration using CELiS (Compact Eyesafe Lidar System), a 1.5 μm Elastic Lidar System

机译：使用CELiS（紧凑型人眼安全激光雷达系统），1.5μm弹性激光雷达系统的颗粒物浓度的单波长激光雷达检索算法

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CELiS (Compact Eyesafe Lidar System) is an elastic backscatter light detection and ranging (lidar) system developed for monitoring air quality environmental compliance regarding particulate matter (PM_k) generated from off-road use of wheeled and tracked vehicles as part of the SERDP (Strategic Environmental Research and Development Program) Measurement and Modeling of Fugitive Dust Emission from Off-Road DoD Activities program. CELiS is small, lightweight and easily transportable for quick setup and measurement of PM_k concentration and emissions. CELiS operates in a biaxial configuration at the 1.5μm eyesafe wavelength with a working range of better than 6 km and range resolution of 5 m. In this paper, we describe an algorithm that allows for semi-quantitative PM_k determination under a set of guiding assumptions using a single wavelength lidar. Meteorological and particle measurements are used to estimate the total extinction (α) and backscatter (β) at a calibration point located at the end range of the lidar. These α and β values are used in conjunction with the Klett inversion to estimate α and β over the lidar beam path. A relationship between β, α and PM_k mass concentrations at calibration points is developed, which then allows the β and α values derived to be converted to PM_k at each lidar bin over the lidar beam path. CELiS can be used to investigate PM_k concentrations and emissions over a large volume, a task that is very difficult to accomplish with typical PM_k sensors.
机译：CELiS（紧凑型人眼安全激光雷达系统）是一种弹性后向散射光检测和测距（激光雷达）系统，用于监测空气质量环境法规遵从性，该污染物与作为SERDP的一部分的越野和履带车辆的越野使用所产生的颗粒物（PM_k）（战略环境研究与开发计划）越野DoD活动计划中的扬尘排放的测量和建模。 CELiS体积小，重量轻且易于运输，可快速设置和测量PM_k浓度和排放。 CELiS以双轴配置在1.5μm的人眼安全波长下工作，工作范围优于6 km，范围分辨率为5 m。在本文中，我们描述了一种算法，该算法允许在使用单个波长激光雷达的一组指导假设下确定半定量PM_k。气象和粒子测量用于估计位于激光雷达末端范围内的校准点处的总消光（α）和反向散射（β）。这些α和β值与Klett反演结合使用，以估计激光雷达光束路径上的α和β。在校准点处建立了β，α和PM_k质量浓度之间的关系，然后可以将得出的β和α值在激光雷达束路径上的每个激光雷达箱处转换为PM_k。 CELiS可用于研究大体积PM_k浓度和排放，这是典型PM_k传感器很难完成的任务。

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