空间激光通信捕获、对准、跟踪系统动态演示实验  

Dynamic Demonstration Experiment of Acquisition,Pointing and Tracking System in Space Laser Communications

作　　者：赵馨[1] 宋延嵩[2] 佟首峰[2] 刘云清[3] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]长春理工大学空间光电技术研究所,吉林长春130022 [3]长春理工大学电子信息工程学院,吉林长春130022

出　　处：《中国激光》2014年第3期125-130,共6页Chinese Journal of Lasers

摘　　要：捕获、对准、跟踪（APT）系统是空间激光通信重要组成部分，是通信正常进行的前提与保障。对APT系统组成原理、工作原理、关键技术、系统设计、工程实现等内容进行了详细的研究，在此基础上开展室内模拟实验及野外演示验证实验。室内模拟实验跟踪精度达到2～3μrad，表明本系统可应用在星间激光通信中。野外双端动态演示实验在飞艇一船舶间进行，结果表明系统捕获概率优于95％，捕获时间小于60s，系统跟踪精度由于受到大气湍流影响而降低，多次实验测试表明在湍流中跟踪精度达到5～25μrad。APT系统的成功研制为空间激光通信顺利进行奠定了基础。Acquisition, pointing and tracking （APT） system is an important part in space laser communication, which is the premise and guarantee for normal work. The composition principle of system, operational principle, key technology, system design and engineering implementation are researched in detail. The simulation experiment indoor and dynamic experiment outdoor are carried out, respectively. The tracking precision in simulation experiment is 2- 3μrad, which proves this system can be used in inter-satellite laser communication. Dynamic demonstration experiment is achieved between airship and ship. The results prove that the acquisition probability is higher than 95%, and acquisition time is less than 60 s. Because of turbulence effect, tracking precision will decrease observably. The tracking precision in turbulence is 5-25 μrad, Development of APT system establishs the foundation for space laser communication execution successfully.

关 键 词：光通信 空间激光通信 动态实验 捕获 对准 跟踪系统 捕获概率 跟踪精度 

分 类 号：TN929.1[电子电信—通信与信息系统]