激光脉冲水下传输时域展宽的蒙特卡罗模拟  

Monte Carlo simulation of time-domain broadening of laser pulse propagating underwater

作　　者：周亚民[1] 吴克启[1] 陈金来[1] 王忠思 蒋洪晖[1] 

机构地区：[1]海军士官学校三系,安徽蚌埠233012

出　　处：《激光与红外》2011年第3期259-263,共5页Laser & Infrared

摘　　要：建立蒙特卡罗模型模拟光子的水下传输,研究了激光脉冲水下传输后时间扩展特性,分析了传输距离、光接收面尺寸等系统参数以及海水介质不对称因子、海水有效衰减系数等水质条件对脉冲时间扩展特性的影响,模拟结果表明:传输距离越大,激光脉冲的时间宽度越宽;光接收面积越大,脉冲时间扩展越严重;海水的前向散射性越强,脉冲的时间宽度越窄;海水有效衰减系数越大,脉冲时间扩展越明显。The Monte Carlo model of underwater photon propagation is developed to simulate the time-domain broadening characteristics of laser pulse propagating underwater.The influence of system parameters,such as propagation distance,receiving area,and water quality to the pulse time-domain broadening characteristics is analyzed.The simulated results show that with increasing of propagating distance,the laser pulse time-domain width increases.And the larger the receiving area of the detector,the more seriously the pulse time-domain broadens.Furthermore,the width of pulse time-domain is relatively narrow when the forward scattering characteristics of seawater is strong.And the pulse time-domain broadening is more clearly apparent with increasing attenuation coefficient.

关 键 词：激光通信 时域展宽 蒙特卡罗方法 光散射 

分 类 号：TN929.1[电子电信—通信与信息系统]