激光技术, 2007, 31 (5): 0479, 网络出版: 2010-06-03
化学气体CO2差分吸收激光雷达告警技术的研究
Study on the chemical gas detecting system by CO2 DIAL
激光技术 化学气体检测系统 差分吸收 TEA CO2激光器 laser technique chemical gas detecting system differential absorption TEA CO2 laser
摘要
为了对大气中化学污染物实时检测，采用差分吸收技术，研制出了CO2激光差分吸收雷达原理样机，介绍了CO2激光差分吸收雷达技术，阐述了差分吸收雷达的基本工作原理，并对激光雷达系统各分系统及工作流程作了描述，对雷达系统的实物仿真及系统联调进行了模拟试验，完成系统的多项功能的实际检测。试验结果表明，激光器光源的光束特性(激光束输出模式及吸收峰和吸收谷支线的光束相互指向稳定性等)对雷达系统的作用距离及侦测误报率及漏报率的影响非常大。
Abstract
The technique of gifferential absorption lidar(DIAL)is applicable for probing chemical polluted gas. The basic principle of DIAL was introduced. The main parts of our specially designed DIAL as well as its working flows were also described. The emulation and simulation results of the lidar system were obtained. These results indicate that the performance of TEA CO2 laser source has much influence on the capabilities of the DIAL.
童卫红, 江东, 周鼎富, 杨泽后, 陈涌, 孙鹏, 陈云亮, 陈亦庆. 化学气体CO2差分吸收激光雷达告警技术的研究[J]. 激光技术, 2007, 31(5): 0479. TONG Wei-hong, JIANG Dong, ZHOU Ding-fu, YANG Ze-hou, CHEN Yong, SUN Peng, CHEN Yun-liang, CHEN Yi-qing. Study on the chemical gas detecting system by CO2 DIAL[J]. Laser Technology, 2007, 31(5): 0479.
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