Rayleigh and sodium lidar system incorporating time-division and wavelength-division multiplexing
Rayleigh and sodium lidar system incorporating time-division and wavelength-division multiplexing
复制标题
结合时分和波分复用的瑞利和钠激光雷达系统
DOI：
10.1016/j.optcom.2019.05.010
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发表时间：
2019-10
影响因子：
2.4
通讯作者：
Dou Xiankang
中科院分区：
文献类型：
--
作者：
Ma Ju;Shangguan Mingjia;Xia Haiyun;Fang Xin;Xue Xianghui;Dou Xiankang
在这项研究中，我们报告了一台瑞利和钠激光雷达系统，这是最近在合肥的中国科技大学升级的，中国(31.5∘N，117∘E)。激光雷达系统具有高时间和垂直分辨率、高信噪比(SNR)和机动性。采用时分和波分复用的方法，光接收机只使用一片光电倍增管，使系统结构紧凑，具有较强的鲁棒性。为了获得城市灯光下的高信噪比数据，激光雷达系统采用了宽带滤波和窄带滤波相结合的方法。激光雷达系统于2016年9月24日建成，已稳定运行2年。从高分辨率、高信噪比的观测数据中提取了仅持续几秒钟的流星轨迹事件。2017年的钠观测数据按年度和半年进行了拟合，结果与之前的研究结果相似。月平均气温呈半年变化。在观测期间连续两天观测到平流层气溶胶。
In this study, we report a Rayleigh and sodium lidar system, which was recently upgraded at the University of Science and Technology of China (USTC) in Hefei, China (31.5∘ N, 117∘ E). The lidar system features high temporal and vertical resolutions, a high signal-to-noise ratio (SNR) and mobility. Using the time-division and wavelength-division multiplexing methods, only one piece of photomultiplier tube is used in the optical receiver, which makes the system compact and robust. Wideband filtering and narrowband filtering are both used in the lidar system to obtain high SNR data under city lights. The lidar system was established on 24 September 2016 and has run stably for 2 years. Meteor trail events that lasted for only a few seconds were extracted from the high resolution, high SNR observational data. The sodium observational data in 2017 were fitted annually and semiannually, and the results were similar to those obtained in previous studies. The monthly average atmospheric temperature showed semiannual variations. Stratospheric aerosols were observed for two consecutive days during the observations.
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