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.
出处
《激光与红外》
CAS
CSCD
北大核心
2011年第3期259-263,共5页
Laser & Infrared
关键词
激光通信
时域展宽
蒙特卡罗方法
光散射
laser communication
time-domain broadening
Monte Carlo method
light scattering
