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在原有瑞利散射和钠层荧光激光雷达的基础上,通过采用二次倍频余光复用和双光纤焦面分光等关键技术,将上述两种高空探测机制融入一台激光雷达中,实现了对30~80 km瑞利散射和80~110 km钠层荧光回波的同时探测,从而达到了利用一台激光雷达对30~110 km这一宽广的大气段进行连通性探测的目的,为中高层大气的探测研究提供了一种更为有效的手段。主要报道双波长高空探测激光雷达的基本原理、关键技术及目前所达到的探测性能。
Based on the original Rayleigh scattering and sodium layer fluorescence Lidar, the above-mentioned two kinds of high-altitude sounding mechanism are integrated into a laser radar by adopting the key technologies of the second harmonic doubler and the double fiber focal plane spectroscopy The simultaneous detection of 30 ~ 80 km Rayleigh scattering and 80 ~ 110 km sodium layer fluorescence echoes, so as to achieve the purpose of using a laser radar to detect the connectivity of 30 ~ 110 km wide atmosphere, Exploration of the upper atmosphere provides a more effective means of exploration. The main coverage of dual-wavelength high-altitude exploration of the basic principle of laser radar, key technologies and the current detection performance achieved.