基于圆偏振移位键控的大气激光通信性能分析  

Performance analysis on atmosphere laser communication system based on circular polarization shift keying

作　　者：刘丹[1] 刘艳[2] 刘智[3] 王璞瑶[3] 周昕[3] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130033 [3]长春理工大学电子信息工程学院,吉林长春130022

出　　处：《红外与激光工程》2013年第11期3111-3115,共5页Infrared and Laser Engineering

基　　金：应用光学国家重点实验室基金资助开放基金

摘　　要：为了有效抑制大气扰动等因素对空间激光通信性能的影响,介绍一种采用新型调制方式——圆偏振移位键控(Circle Polarization Shift Keying,CPolSK)的大气激光通信系统,并简述其工作原理。给出了CPolSK的系统模型,并对系统中影响通信性能的因素进行了分析。主要考虑了探测器噪声和灵敏度、大气信道衰减和发射功率四项主要参数对通信性能的影响,并采用OptiSystem软件对偏振移位键控系统通信过程进行实验研究,结果表明,相同通信条件下,基于CPolSK的大气激光通信系统的综合性能明显优于OOK系统。In order to effectively suppress the impact factors of space laser communication performance, such as atmospheric disturbances and so on. An atmospheric laser communication system was described that took a new modulation method that was Circle Polarization Shift Keying （CPolSK）. The working principle was introduced. The system model of CPolSK was given, and the factors that affeced the performance of communication in the system were analyzed. The four parameters of the detector noise, the sensitivity, the atmospheric channel attenuation and the transmission power which impacted on communication performance were considered. The experimental study of polarization shift keying system communication process was done by the OptiSystem software. The results indicate that the communication performance of the based CPolSK atmospheric laser communication system is obvious better than OOK system under identical communication conditions.

关 键 词：光通信 CPolSK 通信性能 误码率 

分 类 号：TN91[电子电信—通信与信息系统] TN92[电子电信—信息与通信工程]