同步扫描水下激光成像距离的分析

利用双流辐射传输理论和准直光束的散射理论分别计算出接收端目标反射光信号和背向散射光的辐照度，从而得出水下激光成像距离的理论值．一般条件下，该值约为１２倍衰减长度．从理论上分析了成像距离与接收器视场角、激光器和接收器间距、目标反射率等主要参数的定量关系．从机理上分析了主要参数影响的原因得到了在实际应用系统中探测距离与激光器光功率成对数关系的量值．

Theoretical Analysis of Distances about Underwater Laser Imaging for Synchronous Scanning

This paper calculates the irradiance of signal light reflecting from the object and backscatter light at the place of receiver by two flux irradiant transmiting theory and scattering theory of collimated light beam,and obtains the theoretical value of underwater laser imaging distance.In ordinary condition,the value is about 12 attenuation lengths. We analyse theoretically the quantity relationship of imaging distance against the main parameters such as visual angle of receiver,the distance between laser and receiver,reflecting ratio of the object, and get the quantitative value of logarithmic relationship between the survey distance and laser light power in practical system.