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对差分吸收测污雷达(DIAL)系统进行了介绍,阐述了差分吸收测污雷达的基本工作原理,并对系统中主要部件的技术参数进行了模拟计算,对雷达系统各分系统及工作流程作了描述,并对雷达系统进行实物仿真及模拟试验。采用按比例遮挡接收天线和激光透过由塑料袋密封化学物质方法,模拟吸收峰谱线(λOn)的吸收情况,计算出系统侦测到的 CL 值变化情况。实验较充分地验证了差分吸收雷达系统的基本工作原理,取得了差分吸收激光雷达关键技术突破,验证了差分激光雷达在对化学物质进行远程侦测的可行性。
This paper introduces the DIAL system, describes the basic working principle of the DIF radar, and simulates the technical parameters of the main components in the system. The system and work flow of the radar system Described, and the radar system in-kind simulation and simulation tests. Using the method of proportionally shielding the receiving antenna and the laser through the plastic bag sealed chemical substances, the absorption of simulated absorption peak line (λOn) was simulated and the change of CL value detected by the system was calculated. The experiment fully verified the basic working principle of the differential absorption radar system and achieved a breakthrough in the key technology of differential absorption lidar. The feasibility of differential lidar in detecting chemical substances remotely was verified.