Verification of all-fiber airborne coherent Doppler lidar for airspeed sensing and wind measurement

Xu Zhang; Zhifeng Lin; Yuxuan Sang; Chaoyong Chen; Chunqing Gao

doi:10.1117/12.3048516

5 December 2024 Verification of all-fiber airborne coherent Doppler lidar for airspeed sensing and wind measurement

Xu Zhang, Zhifeng Lin, Yuxuan Sang, Chaoyong Chen, Chunqing Gao

Author Affiliations +

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 134181X (2024) https://doi.org/10.1117/12.3048516
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

Coherent Doppler Lidar (CDL) has garnered significant attention for its remote sensing capabilities and high accuracy, establishing it as a pivotal technology in environmental monitoring. The dynamics of airborne platforms are intricately linked to wind conditions, making airborne CDL a crucial tool for enhancing aviation safety. Additionally, airborne CDL systems provide comprehensive meteorological data across extensive geographical areas. We introduce an all-fiber Continuous-Wave (CW) CDL system specifically engineered for integration with flight instrumentation. This CDL system excels in measuring and reconstructing critical flight parameters such as True Airspeed (TAS), Angle of Attack (AoA), and sideslip angle (AoS). A key feature of the CW CDL system is providing three-dimensional airspeed measurements at a data rate of 50 Hz, capturing data from a position 30 meters ahead of the aircraft. To ensure the accuracy and reliability, a series of verification experiments were conducted. Initially, ground-based comparison experiments were performed using a wind tunnel, a wind tower, and a vehicle-mounted sonic anemometer. For airborne verification, the lidar was installed on an aircraft. The aircraft flew at three different indicated airspeeds and four different altitudes, enabling a comprehensive comparison between flight instrument speed data and the results obtained from the CW CDL system. The linear analysis of these airborne experiments consistently yielded correlation coefficients exceeding 0.97, with the mean deviation of less than 1 m/s.

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

Citation Download Citation

Xu Zhang, Zhifeng Lin, Yuxuan Sang, Chaoyong Chen, and Chunqing Gao "Verification of all-fiber airborne coherent Doppler lidar for airspeed sensing and wind measurement", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 134181X (5 December 2024); https://doi.org/10.1117/12.3048516

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KEYWORDS

Signal to noise ratio

Equipment

Sensors

Wind speed

Doppler effect

Aerosols

Continuous wave operation

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