Analyzing and testing of performances of high optical efficiency CDL in wind sensing

Zhou Anran; Han Yuli; Sun Dongsong; Han Fei; Tang Lei; Jiang Shan

doi:10.3788/IRLA201948.1105006

Recently a high optical efficiency all-fiber coherent Doppler lidar (CDL) system was developed to achieve real-time measurements of wind fields. The coherent lidar worked on 1.55 m band, the diameter of the felescope was 50 mm, the temporal and spatial resolution were 1 s and 30 m respectively. In addition, the system consisted of a fiber-based optical transceiver unit, a 2-axis scanner which can program scanning scheme, and a multicore digital signal processor (DSP) for real-time signal processing. Theoretical performances of the system in wind sensing were estimated and compared with experimental results, it verified that the measurement range was 5 km. In comparative experiment, the system and ultrasonic anemometer measured wind field simultaneously. Measured data were compared and analyzed, the result were listed as follow:correlation coefficient of wind speed was 0.980 and standard deviation was 0.235 m/s; correlation coefficient of wind direction was 0.993 and standard deviation was 3.105. The results prove that the system has excellent performance, can be widely used for wind detection in atomospheric boundary layer.

Analyzing and testing of performances of high optical efficiency CDL in wind sensing

1. School of Earth and Space Science,University of Science and Technology of China,Hefei 230031,China;

2. School of Physics and Material Engineering,Hefei Normal University,Hefei 230031,China

Received Date: 2019-07-11

Rev Recd Date: 2019-08-21

Publish Date: 2019-11-25

Key words:

Abstract: Recently a high optical efficiency all-fiber coherent Doppler lidar (CDL) system was developed to achieve real-time measurements of wind fields. The coherent lidar worked on 1.55 m band, the diameter of the felescope was 50 mm, the temporal and spatial resolution were 1 s and 30 m respectively. In addition, the system consisted of a fiber-based optical transceiver unit, a 2-axis scanner which can program scanning scheme, and a multicore digital signal processor (DSP) for real-time signal processing. Theoretical performances of the system in wind sensing were estimated and compared with experimental results, it verified that the measurement range was 5 km. In comparative experiment, the system and ultrasonic anemometer measured wind field simultaneously. Measured data were compared and analyzed, the result were listed as follow:correlation coefficient of wind speed was 0.980 and standard deviation was 0.235 m/s; correlation coefficient of wind direction was 0.993 and standard deviation was 3.105. The results prove that the system has excellent performance, can be widely used for wind detection in atomospheric boundary layer.

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Reference (15)

[1]	Huffaker R M. Laser Doppler detection systems for gas velocity measurements[J]. Applied Optics, 1970, 9(5):1026-1039.
[2]	Zhang Xiaowen, Zheng Yongguang, Wu Lei, et al. Review on application of wind profiler radar in weather monitoring and forecasting[J]. Meteorological Science and Technology, 2017, 45(2):285-297. (in Chinese)张小雯, 郑永光, 吴蕾, 等. 风廓线雷达资料在天气业务中的应用现状与展望[J]. 天气预报, 2017, 45(2):285-297.
[3]	Kopp F, Rahm S, Smalikho I. Characterization of aircraft wake vortices by 2m pulsed Doppler lidar[J]. Journal of Atmospheric and Oceanic Technology, 2004, 2l(2):194-206.
[4]	Courtney M, Wanger R, Lindelow P. Testing and comparison of lidars for profile and turbulence measurements in wind energy[C]//IOP Conference Series:Earth and Environmental Science, 2008, 1(1):12-21.
[5]	Huffaker R M, Jelalian A V, Thomson J A L. Laser Doppler system for detection of aircraft trailing vortices[J]. Proc of the IEEE, 1970, 58(3):322-326.
[6]	Kane T J, Kozlovsky W J, Byer R L, et al. Coherent laser radar at 1.06m using Nd:YAG lasers[J]. Optics Letters, 1987, 12(4):239-239.
[7]	Richardson D J, Nilsson J, Clarkson W A. High power fiber lasers:current status and future perspectives[J]. Journal of The Optical Society Of America B-optical Physics, 2010, 27(11):63-92.
[8]	Cariou J P, Augere B, Valla M. Laser source requirements for coherent lidars based on fiber technology[J]. Comptes Rendus Physique, 2006, 7(2):213-223.
[9]	Ando T, Kameyama S, Hirano Y. All-fiber coherent Doppler LIDAR technologies at mitsubishi electric corporation[C]//IOP Conference Series:Earth and Environmental Science, 2008, 1(1):012011.
[10]	Pan Jingyan, Wu Shuangyang, Liu Guo, et al. Wind measurement techniques of coherent wind lidar[J]. Infrared and Laser Engineering, 2013, 42(7):1720-1724. (in Chinese)潘静岩, 邬双阳, 刘果, 等. 相干激光测风雷达风场测量技术[J]. 红外与激光工程, 2013, 42(7):1720-1724.
[11]	Diao Weifeng, Zhang Xin, Liu Jiqiao, et a1. All fiber pulsed coherent lidar development for wind profiles measurements in boundary layers[J]. Chinese Optics Letters, 2014, 12(7):71-74.
[12]	Wu Songhua, Liu Bingyi, Liu Jintao, et al. Wind turbine wake visualization and characteristics analysis by Doppler lidar[J]. Optics Express, 2016, 24(10):A762-A780.
[13]	Jia Xiaodong, Sun Dongsong, Shu Zhifeng, et al. Optimal design of the telescope in coherent Lidar and detection performance analysis[J]. Acta Optica Sinica, 2015, 35(3):0301001. (in Chinese)贾晓东, 孙东松, 舒志峰, 等. 相干激光雷达中望远镜的优化及探测性能分析[J]. 光学学报, 2015, 35(3):0301001.
[14]	Kameyama S, Ando T, Asaka K, et al. Compact all-fiber pulsed coherent Doppler lidar system for wind sensing[J]. Applied Optics, 2007, 46(11):1953-1962.
[15]	Jia Xiaodong, Sun Dongsong. Maximum likelihood discrete spectral peak estimation in coherent wind lidar and Monte Carlo simulation[J]. High Power Laser and Particle Beams, 2015, 27(6):0610131. (in Chinese)贾晓东, 孙东松. 相干激光雷达中最大似然离散谱峰值估计及Monte Carlo仿真[J]. 强激光与粒子束, 2015, 27(6):0610131.

Analyzing and testing of performances of high optical efficiency CDL in wind sensing

doi: 10.3788/IRLA201948.1105006

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