Development of a coherent Doppler lidar to measure atmosphere windshear

Author

Liu, Jiqiao ; Zhu, Xiaopeng ; Zhou, Jun ; Zang, Huaguo ; He, Yan ; Liu, Dan ; Chen, Weibiao

Author_Institution

Shanghai Key Lab. of All Solid-state Laser & Appl. Tech., Shanghai, China

fYear

2011

fDate

Aug. 28 2011-Sept. 1 2011

Firstpage

843

Lastpage

845

Abstract

A pulsed coherent Doppler lidar prototype at wavelength of 1064nm was developed to measure windshear in the lower troposphere layer. The laser transmitter was an injection-seeded pulsed Nd:YAG laser with pulse energy of 0.5mJ, pulse duration of 80ns and pulse repetion rate of 200Hz. Hard-target speed calibration expriments were carried out to demonstrate speed measurement accuracy of 0.23m/s for the lidar. Then line-of sight atmosphre wind velocity measurement in 500m range with 40m range resolution was implemented. The lidar is being optimized to measure windshear at 2km range away.

Keywords

atmospheric techniques; laser Doppler anemometry; neodymium; optical radar; solid lasers; troposphere; yttrium compounds; YAG:Nd; atmosphere windshear measurement; coherent Doppler lidar; distance 2 km; energy 0.5 mJ; hard target speed calibration; injection seeded pulsed laser; laser transmitter; line-of-sight atmosphre wind velocity measurement; lower troposphere layer; time 80 ns; wavelength 1064 nm; Atmospheric measurements; Fiber lasers; Laser radar; Measurement by laser beam; Semiconductor lasers; Velocity measurement; Wind speed;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4577-1939-4

Type

conf

DOI

10.1109/IQEC-CLEO.2011.6193756

Filename

6193756