摘要
介绍了自行研制的车载差分吸收激光雷达(DIAL)的系统结构和测量原理。利用可调谐激光器输出波长为286.3nm和286.9nm的激光测量SO2,测量范围为500m～3km。该雷达在北京和合肥对SO2进行了实地测量,给出实测的部分典型结果,测量结果与地面仪器定点测量的结果一致。分析了误差的几种影响因素,总的测量误差在距离分别率为300m时小于7×10-9。
The system structure and the lidar principle of a mobile differential absorption lidar (DIAL) system designed by ourselves were described. The operation wavelengths of a tunable laser for SO2 measurement were 286.3 nm and 286.9 nm and the measurement range is approximately from 500 m to 3 km. The field tests in Beijing and Hefei were performed with the lidar system. Examples of measurements of sulfur dioxide in Hefei and Beijing are given and results agree with the measurement results of ground monitor instrument. The error scope is analyzed and the total measurement error is -9 with range resolution of 300 m.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2004年第11期1352-1356,共5页
Journal of Optoelectronics·Laser
基金
国家"863"计划资助项目(2002AA1350307)
国家科技攻关计划奥运科技专项资助项目(2003BA904311)
关键词
激光雷达
可调谐激光器
车载
差分
激光测量
系统结构
波长
SO2
吸收
实测
Data processing
Density measurement (optical)
Error analysis
Laser beams
Monitoring
Pulsed laser applications
Silica
