摘要
给出晴空大气湍流中光外差接收系统接收中频信号电流几率密度函数的表达式。分析了光外差系统在本振散粒噪声限下,中频信号振幅为对数正态分布,相位为高斯相位扰动时,中频信号电流的几率分布特性,并进行了数值计算。
In this paper,an expression is derived for the probability density functions of thei.f.signal current from optical heterodyne receiver systems operating in the presence of cleai-airturbulence.In addition to local oscillator shot noise and the effects of log-normal amplitude fluc-tuation and Gaussian phase perturbations,the characteristics of i.f.signal current probabilitydistribution are analysed.Some numerical calculations are given.
出处
《应用激光》
CSCD
北大核心
1991年第5期209-213,共5页
Applied Laser
关键词
大气通信
光外差
中频信号
电流
atmosphere communication
optical heterodyne
IF signal current
probability distribution
