Acta Optica Sinica, Volume. 41, Issue 10, 1001001(2021)
Analysis of Accuracy and Acquisition Rate of Doppler Lidar Multi-Beam Wind Measurement
As an effective detection tool for observing wind field information, a coherent Doppler lidar is widely used in wind field and atmospheric observations in different scenarios. In August 2019, researchers used the coherent Doppler lidar to continuously carry out a wind profile observation experiment for 13 d at the Shenzhen Shiyan Comprehensive Meteorological Observation Base. The similarity and difference of inversion results of the five-beam, three-beam, and two-beam methods in the Doppler beam scanning mode and the influences of these methods on wind measurement accuracy and data acquisition rate are analyzed. The data comparison results show that the inversion results of the three-beam method and the two-beam method are in good agreement with the results obtained by the five-beam method. In view of the low signal-to-noise ratio of individual beams caused by the system or atmospheric conditions, such as clouds, fog, and precipitation, in actual observation of the lidar, it is necessary to flexibly select the beams to invert the wind field and increase the data acquisition rate. The average increase in detection height obtained is 100--400 m.
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Xiaoquan Song, Wenrui Long, Long Yun, Chao Lu, Jiaping Yin. Analysis of Accuracy and Acquisition Rate of Doppler Lidar Multi-Beam Wind Measurement[J]. Acta Optica Sinica, 2021, 41(10): 1001001
Category: Atmospheric Optics and Oceanic Optics
Received: Oct. 21, 2020
Accepted: Dec. 16, 2020
Published Online: May. 11, 2021
The Author Email: Song Xiaoquan (songxq@ouc.edu.cn)