AML-1车载式大气污染监测激光雷达样机研制

Development of a Mobile Lidar System for Air Pollution Monitoring

针对环境监测工作的迫切需要 ,开发研制了我国第一台车载式大气污染监测激光雷达。它具有测量范围大 ,距离分辨率高、数据可靠、灵敏度高等特点 ,并通过驱动单元能进行空间三维探测。该雷达系统能监测四种大气污染物 ,即大气气溶胶、二氧化硫、二氧化氮和臭氧。大气二氧化硫、二氧化氮、臭氧的最高探测灵敏度分别为0 .0 1mg/m3 、0 .0 4mg/m3 、0 .0 1mg/m3 ,气溶胶的消光系数探测限为 10 -4km-1,最高探测空间分辨力为 7.5m ,最大探测距离为 3～ 10km。介绍了其基本原理 ,关键技术和运行情况。

A mobile differential absorption lidar (DIAL) system for atmospheric pollution measurements has been developed. It is the first mobile system for air pollution monitoring in China. This lidar system allows three-dimensional measurements by using a steering unit, and can measure four kinds of pollutants in atmosphereaerosol, SO 2, NO 2, and O 3. The lower detection limit of the SO 2, NO 2, O 3, and aerosol's extinction coefficient is 0.01 mg/m3,0.04 mg/m3, 0.01 mg/m3, and 10 -4 km -1 respectively. The best spatial resolution and maximum measurement range are 7.5 m and about 3～10 km respectively. Using this system, range-resolved measurements with high sensitivity over large areas can be made. The lidar system in some detail and its performance are described.