物理学报Issue(10)：1-6,6.DOI:10.7498/aps.63.104214
连续波差分吸收激光雷达测量大气CO2∗
Continuous-wave mo dulation differential absorption lidar system for CO2 measurement
摘要
Abstract
An intensity modulation hard-target differential laser absorption lidar system for CO2 sensing is demonstrated. On and off wavelength lasers are modulated with 10 kHz and 12 kHz sinusoidal waves. The echo is extracted using coherent detection technique. The system is fiber based, which makes it compact and removable. We obtain three day variation of horizontal column averaged CO2 concentration of Shanghai district. We also propose an accuracy evaluation method based on electronic noise analysis combined with laser frequency modulation. The result shows that the measurement precision for the column corresponds to 3.39 × 10−6 (rms) with 1s integral time and 450 m path.关键词
连续波调制/差分吸收激光雷达/CO2/精度自标定Key words
continuous-wave modulation/differential absorption lidar/CO2/precision evaluation引用本文复制引用
刘豪,舒嵘,洪光烈,郑龙,葛烨,胡以华..连续波差分吸收激光雷达测量大气CO2∗[J].物理学报,2014,(10):1-6,6.基金项目
民用航天“十二五”预先研究计划(批准号：MYHT-201104)资助的课题.@@@@ Project supported by the Civil Aerospace Pre-Research Program of “12th Five-Year” Plan of China (Grant No. MYHT-201104) （批准号：MYHT-201104）
