摘要
选用高强度、高单色性和高透过率的蓝绿激光作为光源能避免光波在水中快速衰减,选通相机能以时间先后分开不同距离上的散射光和目标反射光,使目标反射光波刚好在选通相机选通工作时间内到达并成像,有效克服了后向散射的干扰。设计了一套距离选通水下激光成像系统,阐述了其系统组成、功能模块及工作流程,进行了实验室条件下的水下成像实验,并与常规自然光被动成像结果进行对比。实验结果显示距离选通水下激光系统成像距离达40 m,约6倍衰减长度。
The fast attenuation of light wave in water can be avoided by using blue-green laser with high intensity,high monochromaticity and high transmittance.The gating camera can separate the target reflected light from the scattered light at different distances in time,so that the reflected light wave of the target can arrive and image just within the gating working time of the gating camera,which effectively overcomes the interference of backscattering.A range-gated underwater laser imaging system was proposed,and its system components,function module and working process was elaborated.Finally underwater imaging experiments were carried out in the Lab.The results tell us that the imaging distance of this kind of range-gated underwater laser imaging system reaches the value as high as 40 m,and this distance is about 6 Al long.
作者
吕文磊
张旭
刘可
LYU Wenlei;ZHANG Xu;LIU Ke(The No.91550 th Troop of PLA,Dalian 116023,China)
出处
《兵器装备工程学报》
CAS
北大核心
2019年第8期198-202,共5页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(61701504)
