半导体激光雷达斜程能见度观测和反演方法  

Measurement of slant visibility and its iteration method with diode-laser lidar

作　　者：唐磊[1] 舒志峰[1] 董吉辉[1] 岳斌[1] 沈法华[1] 董晶晶[1] 孙东松[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所大气成分与光学重点实验室,合肥230031

出　　处：《强激光与粒子束》2010年第5期963-967,共5页High Power Laser and Particle Beams

基　　金：安徽省国际科技合作计划项目(09080703032)

摘　　要：论述了自行研制的半导体激光雷达能见度仪的工作原理、基本结构及参数,提出了一种稳定的消光系数迭代算法。利用该半导体激光雷达能见度仪与美国Belfort model 6230A型能见度仪对水平及斜程能见度进行了对比实验。对比实验表明:对于水平能见度,平均相对误差在10%以内的占总量的45.6%,平均相对误差在20%以内的占总量的84.7%,平均相对误差在30%以内的占总量的91.2%;对于斜程能见度,不同天气条件下,能见度变化趋势明显,反映了斜程能见度与水平能见度探测的差别与意义。充分说明该能见度仪能够在各种气候条件下测量水平及斜程能见度,所提出的反演能见度的迭代算法稳定可靠。The principle,structure and parameters of the diode-laser lidar used to measure visibility were introduced,and a steady iteration algorithm was proposed to calculate the extinction coefficient.The intercomparison experiment with this lidar and the Belfort model 6230A made in America was conducted for horizontal and slant visibility detection.The results show that the possibilities of average relative error below 10%,20% and 30% for horizontal visibility measurements are 45.6%,84.7% and 91.2%,respectively.For slant visibility measurement,the change of the visibility is obvious,which demonstrates the difference and significance of the slant and horizontal visibility measurements on various weather conditions.It is sufficiently shown that this lidar system is capable of measuring the slant and horizontal visibility on various weather conditions,and the proposed iteration method is stable and reliable.

关 键 词：斜程能见度 半导体激光雷达 消光系数 迭代算法 

分 类 号：TN958.98[电子电信—信号与信息处理]