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Proceedings Paper

An all-fiber, modular, compact wind lidar for wind sensing and wake vortex applications
Author(s): Narasimha S. Prasad; Russel Sibell; Steven Vetorino; Richard Higgins; Allen Tracy
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Paper Abstract

This paper discusses an innovative, compact and eyesafe coherent lidar system developed for wind and wake vortex sensing applications. With an innovative all-fiber and modular transceiver architecture, the wind lidar system has reduced size, weight and power requirements, and provides enhanced performance along with operational elegance. This all-fiber architecture is developed around fiber seed laser coupled to uniquely configured fiber amplifier modules. The innovative features of this lidar system, besides its all fiber architecture, include pulsewidth agility and user programmable 3D hemispherical scanner unit. Operating at a wavelength of 1.5457 microns and with a PRF of up to 20 KHz, the lidar transmitter system is designed as a Class 1 system with dimensions of 30”(W) x 46”(L) x 60”(H). With an operational range exceeding 10 km, the wind lidar is configured to measure wind velocities of greater than 120 m/s with an accuracy of +/- 0.2 m/s and allow range resolution of less than 15 m. The dynamical configuration capability of transmitted pulsewidths from 50 ns to 400 ns allows high resolution wake vortex measurements. The scanner uses innovative liquid metal slip ring and is built using 3D printer technology with light weight nylon. As such, it provides continuous 360 degree azimuth and 180 degree elevation scan angles with an incremental motion of 0.001 degree. The lidar system is air cooled and requires 110 V for its operation. This compact and modular lidar system is anticipated to provide mobility, reliability, and ease of field deployment for wind and wake vortex measurements. Currently, this wind lidar is undergoing validation tests under various atmospheric conditions. Preliminary results of these field measurements of wind characteristics that were recently carried out in Colorado are discussed.

Paper Details

Date Published: 15 June 2015
PDF: 11 pages
Proc. SPIE 9465, Laser Radar Technology and Applications XX; and Atmospheric Propagation XII, 94650C (15 June 2015); doi: 10.1117/12.2181170
Show Author Affiliations
Narasimha S. Prasad, NASA Langley Research Ctr. (United States)
Russel Sibell, Sibelloptics, LLC (United States)
Steven Vetorino, Sibelloptics, LLC (United States)
Richard Higgins, Sibelloptics, LLC (United States)
Allen Tracy, Sibelloptics, LLC (United States)


Published in SPIE Proceedings Vol. 9465:
Laser Radar Technology and Applications XX; and Atmospheric Propagation XII
Monte D. Turner; Linda M. Wasiczko Thomas; Gary W. Kamerman; Earl J. Spillar, Editor(s)

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