Chinese Optics Letters, 2014, 12 (7): 072801, Published Online: Jun. 26, 2014
All fiber pulsed coherent lidar development for wind profiles measurements in boundary layers Download: 1152次
280.3340 Laser Doppler velocimetry 010.3640 Lidar 010.0280 Remote sensing and sensors 280.1100 Aerosol detection 280.1350 Backscattering
Abstract
An all fiber pulsed coherent Doppler lidar (CDL) system at 1.54 μm wavelength is developed for wind profiles measurements. This lidar affords 43.0-μJ pulse energy at 10-kHz pulse repetition frequency with 500-ns pulse width. The lidar is operated in monostatic mode with 50-mm diameter telescope. The heterodyne mixing signals are acquired with 500 M/s analog to digital converter and 2048 points fast Fourier transform (FFT) is implemented. Line of sight wind speeds are measured with more than 3.0-km range in a horizontal direction and about 1.9 km in the vertical direction with 75-m range resolution. Systematic error of speed measurement of 0.2 m/s is validated.
Weifeng Diao, Xin Zhang, Jiqiao Liu, Xiaopeng Zhu, Yuan Liu, Decang Bi, Weibiao Chen. All fiber pulsed coherent lidar development for wind profiles measurements in boundary layers[J]. Chinese Optics Letters, 2014, 12(7): 072801.