机载水道激光测深仪是一种带有光学接收处理机、微型计算机、记录和显示设备的脉冲扫描式激光系统。安装在美国海军沿海调查船(“乔维尼特”和“听筒”号)的直升飞机上,进行近岸浅水测深。该系统是通过记录来自海面和海底的反射激光脉冲到达的时间来计算深度的。发射脉冲的波长为0.53微米,重复频率为400赫。此系统穿透典型中纬度浑浊度能力,在白天至少20米,在晚上(无太阳光环境噪声)为30米;在十分清洁的水中,白天 Airborne laser sounder is a pulsed scanning laser system with an optical receiver, microcomputer, recording and display device. Installed on helicopters on US Navy coastal survey vessels (“Jovignot” and “handset”) for shallow coastal sounding. The system calculates depth by recording the arrival time of reflected laser pulses from the sea and seafloor. The emission pulse has a wavelength of 0.53 microns and a repetition frequency of 400 Hz. This system penetrates typical mid-latitude turbidity capabilities at least 20 meters during the daytime and 30 meters at night (no ambient sunlight); in very clean water during the day