摘要
介绍了用于风切变测量的激光雷达外差探测系统,阐述了其工作原理,根据CO2雷达系统与Ho:YAG雷达系统相关参数进行信噪比模拟和风速误差对比,模拟结果表明:波长2.1μm的Ho:YAG雷达和10.6μm CO2都适合机载低空风切变探测。通过对比,无论系统效率还是衰减率,Ho:YAG的性能都更为优良、误差更小、探测距离更远。
A lidar working with heterodyne detection is introduced.It is used to measure wind shear.Its working principle is described,and the performance and measurement error of a lidar system are analyzed.Both of two lidar systems are investigated,solid state Ho:YAG at 2.1 μm and CO2 at 10.6 μm,appear able to meet the windshear warning requirements,both CO2 and Ho:YAG are shown feasible for airborne windshear detection for dry microbursts,Ho:YAG lidar has supperior performance to the CO2 lidar technology for long-range detection of the interior structure of a microburst,Ho:YAG has better transmission in clear and wet weather.
出处
《红外与激光工程》
EI
CSCD
北大核心
2007年第z2期617-619,共3页
Infrared and Laser Engineering
