圆盘透明度在水下激光成像系统性能评估中的应用  

Secchi disk imaging model and its application in performance evaluation of underwater laser imaging systems

作　　者：申越[1] 郑威[1] 俞兵[2] 吴磊[2] 黎高平[2] 杨鸿儒[2] 

机构地区：[1]中国兵器科学研究院,北京100089 [2]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2014年第2期336-341,共6页Journal of Applied Optics

基　　金：海装十二五预研项目(4010604010204);兵器十二五预研支撑项目(62201050106)

摘　　要：水下激光主动成像系统的探测能力不仅与探测系统自身参数有关,还与水质等环境因素有关。为评估水质对水下激光成像系统探测能力的影响,根据圆盘透明度成像模型,研究了吸收系数、散射系数、漫射衰减系数等水体水质参数与圆盘透明度的关系,给出了圆盘透明度与水下激光主动成像系统最大探测深度的表达式。实验表明,ICCD距离选通水下激光主动成像系统最大探测深度值与理论计算值相对误差小于20%。基于成像理论的圆盘透明度模型反映了水下激光成像系统探测能力与水体水质参数的关系,可用圆盘透明深度来评估水下激光成像系统的探测能力。The performance of an active underwater laser imaging system is not only determined by the parameters of the imaging system,but also affected by the optical properties of the water.In order to evaluate the performance of the active underwater laser imaging system,the relation among the Secchi depth and the optical properties(such as absorbing coefficient,scattering coefficient,and diffuse attenuation coefficient)of the water were investigated based on the Secchi depth imaging model.Moreover,the expression for the maximum detection depth of the underwater laser imaging system as a function of the Secchi depth was deduced.Experimental results show that the relative error between the theoretical value and the measured value of the maximum detection depth of the intensified charge-coupled device(ICCD)range gated underwater laser imaging system is less than 20%.The Secchi depth imaging model is useful for performance evaluation of the underwater laser imaging systems because that it can reflect the relationship of the detection capability of the active laser imaging system and the optical properties of the water.

关 键 词：圆盘透明度 水下激光成像系统 探测能力 性能评估 

分 类 号：TN249[电子电信—物理电子学]