Design and calibration of a coherent wind measurement system with paraxial structure

Zhendong Wang; Zaihong Hou; Xu Jing

doi:10.1117/12.3026483

6 May 2024 Design and calibration of a coherent wind measurement system with paraxial structure

Zhendong Wang, Zaihong Hou, Xu Jing

Proceedings Volume 13161, Fourth International Conference on Telecommunications, Optics, and Computer Science (TOCS 2023); 131610B (2024) https://doi.org/10.1117/12.3026483
Event: Fourth International Conference on Telecommunications, Optics and Computer Science (TOCS 2023), 2023, Xi’an, China

Abstract

The real-time measurement of low-level wind fields has very important practical significance and application value in fields such as climate, agriculture, and engineering applications. Especially, the accurate acquisition of wind field information within a height of 200 meters has become an urgent problem to be solved. The developed paraxial Doppler coherent wind radar system uses a continuous laser light source with a wavelength of 1550 nm that is safe for the human eye, and adopts an all fiber coherent detection method. By separating the transmission and reception of laser signals, the design further reduces the backward reflection of the fiber end surface, thereby enhancing the ability to identify Doppler shifts in the echo signal. Compared with the wind speed simulated by the runner device at a fixed position, the linear correlation coefficients between the simulated wind speed and the measured wind speed along the fitting curve are both greater than 0.999, verifying that the system can effectively achieve the measurement of wind speed. The system can detect designated areas of the atmospheric wind field at different distances, and can also quickly and stably detect wind speed signals. The relevant research can be used to retrieve the actual atmospheric low-level wind field for real-time monitoring.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhendong Wang, Zaihong Hou, and Xu Jing "Design and calibration of a coherent wind measurement system with paraxial structure", Proc. SPIE 13161, Fourth International Conference on Telecommunications, Optics, and Computer Science (TOCS 2023), 131610B (6 May 2024); https://doi.org/10.1117/12.3026483

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KEYWORDS

Wind speed

Wind measurement

LIDAR

Signal detection

Laser frequency

Doppler effect

Physical coherence

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