NSSC OpenIR  > 空间科学部
Implementing a wind measurement Doppler Lidar based on a molecular iodine filter to monitor the atmospheric wind field over Beijing
Du, Li-fang; Yang, Guo-tao; Wang, Ji-hong; Yue, Chuan; Chen, Lin-xiang; Du, Li-fang (lfdu@nssc.ac.cn)
Department空间科学部
Source PublicationJournal of Quantitative Spectroscopy and Radiative Transfer
2016
ISSN0022-4073
Language英语
AbstractA wind measurement Doppler Lidar system was developed, in which injection seeded laser was used to generate narrow linewidth laser pulse. Frequency stabilization was achieved through absorption of iodine molecules. Commands that control the instrumental system were based on the PID algorithm and coded using VB language. The frequency of the seed laser was locked to iodine molecular absorption line 1109 which is close to the upper edge of the absorption range,with long-time (>4h) frequency-locking accuracy being ≤0.5MHz and long-time frequency stability being 3.55×10-9. Design the continuous light velocity measuring system, which concluded the cure about doppler frequency shift and actual speed of chopped wave plate, the velocity error is less than 0.4m/s. The experiment showed that the stabilized frequency of the seed laser was different from the transmission frequency of the Lidar. And such frequency deviation is known as Chirp of the laser pulse. The real-time measured frequency difference of the continuous and pulsed lights was about 10MHz, long-time stability deviation was around 5MHz. When the temporal and spatial resolutions were respectively set to 100s and 96m, the wind velocity measurement error of the horizontal wind field at the attitude of 15-35km was within ±5m/s, the results showed that the wind measurement Doppler Lidar implemented in Yanqing, Beijing was capable of continuously detecting in the middle and low atmospheric wind field at nighttime. With further development of this technique, system measurement error could be lowered, and long-run routine observations are promising. © 2016.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5592
Collection空间科学部
Corresponding AuthorDu, Li-fang (lfdu@nssc.ac.cn)
Recommended Citation
GB/T 7714
Du, Li-fang,Yang, Guo-tao,Wang, Ji-hong,et al. Implementing a wind measurement Doppler Lidar based on a molecular iodine filter to monitor the atmospheric wind field over Beijing[J]. Journal of Quantitative Spectroscopy and Radiative Transfer,2016.
APA Du, Li-fang,Yang, Guo-tao,Wang, Ji-hong,Yue, Chuan,Chen, Lin-xiang,&Du, Li-fang .(2016).Implementing a wind measurement Doppler Lidar based on a molecular iodine filter to monitor the atmospheric wind field over Beijing.Journal of Quantitative Spectroscopy and Radiative Transfer.
MLA Du, Li-fang,et al."Implementing a wind measurement Doppler Lidar based on a molecular iodine filter to monitor the atmospheric wind field over Beijing".Journal of Quantitative Spectroscopy and Radiative Transfer (2016).
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