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自由空间激光通信系统APT粗跟踪链路功率分析
引用本文:佟首峰,刘云清,姜会林.自由空间激光通信系统APT粗跟踪链路功率分析[J].红外与激光工程,2006,35(3):322-325,350.
作者姓名:佟首峰  刘云清  姜会林
作者单位:长春理工大学,光电工程学院,吉林,长春,130022
摘    要:在简要介绍典型自由空间激光通信系统组成的基础上,重点分析APT粗跟踪链路的特性,并从功率的角度分别对链路发射、传输、接收单元定量描述,对光斑探测CCD相机单元的噪声源种类、特性以及有效抑制的措施进行研究,对不同环境的背景光特性和抑制措施进行分析,得到光斑探测信噪比.在理论分析的基础上对部分关键器件进行选取和系统优化设计,使粗跟踪链路满足任务要求.

关 键 词:自由空间激光通信  捕获、瞄准、跟踪  粗跟踪组件  信标  信噪比
文章编号:1007-2276(2006)03-0322-04
收稿时间:2005-06-23
修稿时间:2005-06-232005-08-02

Power analysis of APT coarse tracking link of free space laser communication system
TONG Shou-feng,LIU Yun-qing,JIANG Hui-lin.Power analysis of APT coarse tracking link of free space laser communication system[J].Infrared and Laser Engineering,2006,35(3):322-325,350.
Authors:TONG Shou-feng  LIU Yun-qing  JIANG Hui-lin
Affiliation:School of Photo-electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
Abstract:A typical structure of laser communication system was described briefly at first. Then the characteristics of coarse tracking assembly was analyzed. Link transmission including of beacon sending, free space transmitting and beacon receiving was described quantitatively. The characteristics of various system noise from CCD camera sub-system were analyzed. The characteristics of background light were also discussed. Then SNR of CCD output signal was calculated. System design was optimized, and important component was selected to make coarse tracking link meet the task requirement.
Keywords:Free space laser communication  Acquisition  pointing and tracking  Coarse trackingassembly  Beacon  Signal noise ratio
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