Narrowband sodium lidar for the measurements of mesopause region temperature and wind
Narrowband sodium lidar for the measurements of mesopause region temperature and wind
复制标题
用于测量中层顶区域温度和风的窄带钠激光雷达
DOI：
10.1364/ao.51.005401
复制
发表时间：
2012-08-01
期刊：
影响因子：
1.9
通讯作者：
Dou, Xiankang
中科院分区：
文献类型：
--
作者：
Li, Tao;Fang, Xin;Dou, Xiankang
本文报道了中国科学技术大学（USTC）最近研制的窄带高光谱分辨率钠温度/风激光雷达。在科罗拉多州立大学（CSU）窄带钠激光雷达与基于染料激光器的发射机之后，USTC钠温度/风激光雷达进行了许多技术改进，以促进自动化和易于操作;这些改进包括自制的脉冲染料放大器（PDA），光束转向系统，恒星跟踪程序和电子定时控制。在PDA平均输出功率约为1.2 W、接收望远镜直径为0.76 m的情况下，我们的激光雷达系统的功率孔径积约为0.55 Wm（2），与CSU和伊利诺伊大学香槟分校（UIUC）的钠激光雷达系统相当。在夜间晴空条件下，由光子噪声和激光锁定波动引起的温度和风的典型测量的不确定性在2 km垂直分辨率和15 min时间分辨率下分别估计为类似于1.0 K和类似于1.5 m/s，在钠峰（例如，91公里），以及8 K和10米/秒，分别在两个钠层边缘（例如，81公里和105公里）。自2011年11月以来，中国科学技术大学窄带钠激光雷达一直在夜间定期运行。使用收集的初始数据，我们证明了这些高分辨率和精度的数据集的可靠性和适用性的研究在中层顶区域的波动扰动。(C)2012美国光学学会
We report here a narrowband high-spectral resolution sodium temperature/wind lidar recently developed at the University of Science and Technology of China (USTC) in Hefei, China (31.5 degrees N, 117 degrees E). Patterned after the Colorado State University (CSU) narrowband sodium lidar with a dye laser-based transmitter, the USTC sodium temperature/wind lidar was deployed with a number of technical improvements that facilitate automation and ease of operation; these include a home constructed pulsed dye amplifier (PDA), a beam-steering system, a star-tracking program, and an electronic timing control. With the averaged power of similar to 1.2 W output from PDA and the receiving telescope diameter of 0.76 m, our lidar system has a power aperture product of similar to 0.55 Wm(2) and is comparable to the CSU and the University of Illinois at Urbana-Champaign (UIUC) sodium lidar systems. The uncertainties of typical measurements induced by photon noise and laser locking fluctuation for the temperature and wind with a 2 km vertical and 15 min temporal resolutions under the nighttime clear sky condition are estimated to be similar to 1.0 K and similar to 1.5 m/s, respectively, at the sodium peak (e.g., 91 km), and 8 K and 10 m/s, respectively, at both sodium layer edges (e.g., 81 km and 105 km). The USTC narrowband sodium lidar has been operated regularly during the night since November 2011. Using the initial data collected, we demonstrate the reliability and suitability of these high resolution and precision datasets for studying the wave perturbations in the mesopause region. (C) 2012 Optical Society of America