中国激光, 2007, 34 (3): 406, 网络出版: 2007-03-15
采用原子滤光的激光雷达白天探测技术
Daytime Observation Technology of Lidar by Using Atomic Optical Filter
激光技术 激光雷达 白天探测 钠层荧光 原子滤光 原子稳频 光学定位雷达 laser technique lidar daytime observation Na fluorescence atomic optical filter atomic frequency stabilization optic positioning lidar
摘要
在已有的双波长高空探测激光雷达的基础上,通过采用钠原子滤光器技术以及配合相应的关键技术,使得其中的钠层荧光通道具有了白天探测能力。由于钠原子滤光器极窄的滤光带宽和极强的带外抑制,使得即使在中午太阳背景光最强的时段,也能以光子计数方式探测到80~110 km高空钠层的微弱回波信号。实验观测结果表明,该技术已具备了对高空钠层的全时段探测能力,从而使利用激光雷达对我国高层大气进行24 h连续探测研究成为可能。
Abstract
Basing on the dual-wavelength high altitude detecting lidar that we have developed, the daytime observation ability has been realized in its sodium fluorescence channel by employing Na (sodium) atomic optical filter and other relevant technologies. Because of very narrow passband and very high out-of-band suppression of the Na atomic optical filter, the lidar echo at 80~110 km altitude can be obtained even in the noon-time when the background light from the sun is very strong. The ability of 24 hours continuous observation of the lidar system has been demonstrated by the preliminary observation result. This development makes the all time detection and investigation of high altitude atmosphere over our country becoming possible.
程学武, 龚顺生, 李发泉, 戴阳, 宋娟, 王嘉珉, 李奉延. 采用原子滤光的激光雷达白天探测技术[J]. 中国激光, 2007, 34(3): 406. 程学武, 龚顺生, 李发泉, 戴阳, 宋娟, 王嘉珉, 李奉延. Daytime Observation Technology of Lidar by Using Atomic Optical Filter[J]. Chinese Journal of Lasers, 2007, 34(3): 406.