Data from: Revisiting wind speed measurements using actively heated fiber optics: a wind tunnel study

Near-surface wind speed is typically only measured by point observations. The Actively Heated Fiber-Optic (AHFO) technique, however, has the potential to provide high-resolution distributed observations of wind speeds, allowing for better spatial characterization of fine-scale processes. Before AHFO can be widely used, its performance needs to be tested in a range of settings. In this work, experimental results on this novel observational wind-probing technique are presented. In a controlled wind-tunnel setup we assessed both the accuracy and the precision of AHFO under a range of operational conditions (wind speed, angles of attack and temperature difference). The technique allows for wind speed characterization with a spatial resolution of 0.3-m on a 1-s time scale. The flow in the wind tunnel was varied in a controlled manner, such that the mean wind, ranged between 1 and 17 ms-1. The AHFO measurements are compared to sonic anemometer measurements.

近地表风速通常仅通过点位观测手段获取。主动加热光纤（Actively Heated Fiber-Optic, AHFO）技术具备提供高分辨率分布式风速观测的潜力，可实现对精细尺度过程的高精度空间特征表征。在AHFO技术实现大规模应用前，需在多类场景下对其性能开展验证测试。本研究呈现了这款新型风速探测观测技术的实验结果：通过可控风洞实验装置，在风速、攻角与温差等多组运行工况下，对AHFO技术的准确度与精密度进行了评估。该技术可实现空间分辨率为0.3米、时间分辨率为1秒的风速特征刻画。风洞气流以可控方式调节，平均风速区间为1至17米每秒。研究将AHFO的观测数据与超声风速仪的测量结果进行了对比分析。