Data Processing and Analysis of Eight-Beam Wind Profile Coherent Wind Measurement Lidar

Abstract

Real-time measurement of atmospheric wind field parameters plays an important role in weather analysis and forecasting, including improving the efficiency of wind energy, particle tracking, boundary layer measurements, and airport security. In this study, a wind profile coherent wind Light Detection and Ranging (Lidar) measurement with a wavelength of 1.55 µm was developed and demonstrated based on the principle of eight-beam velocimetry. The wind speed information was retrieved, and vertical and horizontal profiles were calculated via power spectrum estimation of sampled echo signals through the measurement of the atmospheric wind field in Hefei for several consecutive days. The experimental results show that the wind profiles produced using different techniques are quite consistent and the standard error is less than 0.42 m/s compared with three-beam and five-beam wind measurements.

Field Verification of Vehicle-Mounted All-Fiber Coherent Wind Measurement Lidar Based on Four-Beam Vertical Azimuth Display Scanning

“…In this study, we used a pulsed CWML system manufactured by Technovo Lidar High Tech Co., Ltd., Hefei, China (model KC-WL-2006 Lidar) [30]. The Lidar system is divided into two sub-systems: laser-transmitting system and laser-receiving system.…”

Enhanced Wind-Field Detection Using an Adaptive Noise-Reduction Peak-Retrieval (ANRPR) Algorithm for Coherent Doppler Lidar

“…CDL uses the Doppler principle to detect atmospheric wind speed. By extracting the Doppler shift of the echo signal, wind-speed information can be obtained [23].…”

Optical scheme optimization for a coherent doppler lidar

“…The advantage of using laser sources with a working wavelength of 1.55 μm is the ability to make the system compact, efficient and reduce the cost of equipment, first of all through the use of standard components developed for the telecommunications industry: local oscillators, isolators, detectors, connectors, splitters and other fiber components [2,3]. Moreover, collimators for operation with the optical fiber output can be found among the standard optical components, which allow accurate positioning of the fiber laser output relative to the other part of the optical system.…”