自由空间通信中光斑自适应伺服系统的研究  

Research on facula adaptable servo system in the free space Communication System

作　　者：汤善庆[1] 陈名松[1] 

机构地区：[1]桂林电子科技大学信息与通信学院

出　　处：《微计算机信息》2009年第35期155-157,共3页Control & Automation

基　　金：基金申请人:陈名松;项目名称:基于ICCD的距离选通水下激光成像系统的应用研究;基金颁发部门:广西科技厅(0832012)

摘　　要：设计了一个自适应的光斑伺服系统,控制海面光斑的大小为一个确定值,克服了由于运动的高空激光光源高度D的变化引起海面光斑大小的变化的缺点.用高斯光束传输的规律推算出激光在自由空间传输中运动的高空激光光源到海面的距离D和望远镜目镜的束腰到物镜的距离L关系,根据得到的关系式用MATLAB进行仿真,并用增量式PID算法来实现,然后就PID算法在DSP系统进行了设计和仿真,验证了系统的可行性。A design of facular adaptive servo system is introduced in this paper.Itcan contol the size of spot that we want,The deficiency that spot size changes with the change of height D between high altitude and the sea level is overcome. Through the law about laser as Gaussian beam transmitting in free space, the relational expression of the height D and the distance L from telescope eyepieces waist to objective lens can be calculated. According to the expression, the feasibility of our design is verified by MATLAB simulation and incremental PID algorithm＇s realization in a DSP system.

关 键 词：高斯光束 自适应 自由空间 

分 类 号：TN929.1[电子电信—通信与信息系统]