根据国际机载荧光激光雷达系统发展趋势,对基于512通道ICCD的机载海洋荧光激光雷达系统进行了 实验室实验模拟和计算,对其可行性进行了评估。采用单脉冲能量70 μJ的355 nm Nd:YAG激光器 作为激发光源,直径100 mm的透镜收集探测距离5 m远的荧光信号,信号具有较好信噪比。 模拟计算表明,对于同样基于ICCD探测的机载海洋激光雷达,采用20 Hz、单脉冲能量80 mJ的激光器 和200 mm口径望远镜在150 m探测距离可获得与实验室相当的结果。

Following the trend in the world, a 512 channels ICCD was used as ocean lidar’s detector. With a 70 μJ single pulse energy, 355 nm laser and the 512 channels ICCD, the performance of airborne ocean lidar was simulated in laboratory. The water sample was put in 5 m and the fluorescence signal was collected with a 100 mm diameter lens. The experimental result shows a good signal noise ratio. Based on the simulation experimental results, it can be included that a real airborne ocean lidar with a 20 Hz, 80 mJ single pulse energy, and 200 mm diameter collection telescope has nearly the same performance with the lab lidar system.