激光脉冲水下时域特性的蒙特卡罗模拟  

Analysis of the time distribution of underwater laser pulse using Monte Carlo simulation

作　　者：吴王杰[1] 章曦[1] 吴方平[1] 蒋敏[1] 

机构地区：[1]解放军理工大学理学院物理教研中心,江苏南京211101

出　　处：《激光与红外》2013年第4期366-370,共5页Laser & Infrared

基　　金：解放军理工大学预研基金(No.20110507)资助

摘　　要：基于蒙特卡罗方法定量分析了光子在目标平面上的时间分布和光子在机载雷达处的时间分布。对于目标平面处接收到的光子时间分布,光子的峰值时间随目标深度的变化关系近似呈现线性的变化规律,而归一化光子数目随目标深度的变化关系近似呈现负幂指数的变化规律。对于光子返回机载雷达处的时间分布,研究发现随着风速的增加,机载雷达接收到的归一化光子数目逐渐减少;而当风速增加到一定程度,这一影响变得不再明显。The photon time distribution at the target surface and at the radar surface are analyzed using Monte Carlo method.For the photon time distribution at the target surface,the relationship between the target depth and the photon time peak value is approximately linear,but the relationship between the target depth and the normalized photon number conforms approximately to the negative power law.For the photo time distribution at the radar surface,it is found that the normalized photon number received by radar decreases as the wind velocity increases.When wind velocity increases to a certain value,the influence becomes unobvious.

关 键 词：激光探测 光子时间分布 蒙特卡罗方法 波动水面 

分 类 号：TN958.98[电子电信—信号与信息处理]