Performance verification of mobile Doppler wind lidar

Kaixin Wang; Xu Zhang; Zhifeng Lin; Chunqing Gao

doi:10.1117/12.2616393

8 July 2022 Performance verification of mobile Doppler wind lidar

Kaixin Wang, Xu Zhang, Zhifeng Lin, Chunqing Gao

Proceedings Volume 12280, 2021 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 1228003 (2022) https://doi.org/10.1117/12.2616393
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

Coherent Doppler wind lidar has made significant progress in wind profile measurement because of its high temporal and spatial resolution. All-fiber Coherent Doppler wind lidar has caused most interest in mobile wind detection due to its excellent stability and reliability. A theoretical model was analyzed based on the signal-to-noise ratio (SNR) function, the SNR of continuous-wave and pulsed lidar with different focusing distances was evaluated. A 1550 nm all-fiber mobile Doppler wind lidar was designed for wind profile measurement. The system consists of a narrow-linewidth seed laser, a single-mode fiber amplifier, transceiver optics, and a data processing system. In order to verify the performance of the mobile laser lidar, a velocity calibration experiment was carried out on a moving car with a speed of 10-30 m/s in December 2020. The wind velocity of laser lidar and ultrasonic anemometers was measured and compared with a different elevation angle of laser. Results show good agreement between both measurements. The correlation coefficient is great than 0.96, and the standard deviation of velocity is less than 0.79 m/s.

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Kaixin Wang, Xu Zhang, Zhifeng Lin, and Chunqing Gao "Performance verification of mobile Doppler wind lidar", Proc. SPIE 12280, 2021 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 1228003 (8 July 2022); https://doi.org/10.1117/12.2616393

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KEYWORDS

LIDAR

Doppler effect

Ultrasonics

Wind measurement

Signal to noise ratio

Continuous wave operation

Velocity measurements

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