运用到达角起伏的马尔柯夫近似和湍流大气中传输光束的几何光学近似,导出了满足奥伦斯坦-乌伦贝克过程的到达角起伏概率密度的福克-普朗克方程,得到了与传输路程相关的到达角起伏Rician分布概率密度函数,同时讨论了狭激光束到达角起伏导致的光强起伏统计问题。

The Fokker-Plank equation for probability density of the arrival-angle fluctuations,which is Statisfied with the Ornstein-Uhlenbeck process, is derived by making use of the Markovian random process approximation for arrival-angle fluctuations and geometrical optics approximation for laser propagation in atmospheric turbulence. The Rician probebillty distribution density function of the arrival-angle fluctuations that relies on the propagating distance is obtained.A discussion of the Statistics of the intensity fluctuations caused by the angle of arrival fluctuations of a narrow laser beam was given.