基于逆向调制反射器的星间激光通信系统设计  

Design of Modulated Retroreflector Based Intersatellite Laser Communication Systems

作　　者：贾艳梅 吕从民[1,2] 申鹏飞 路璐[1,2] JIA Yanmei;LU Congmin;SHEN Pengfei;LU Lu(University of Chinese Academy of Sciences,Beijing 100049,China;Technology and Engineering Center for Space Utilization,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院空间应用工程与技术中心,北京100094

出　　处：《载人航天》2021年第6期754-760,共7页Manned Spaceflight

基　　金：中国科学院重点部署项目(ZDRW-KT-2019-1-0103)。

摘　　要：针对编队飞行小卫星间信息共享、快速响应、低SWaP值和实时数据交换等要求,提出了一种基于逆向调制反射器(MRR)的小卫星编队星间激光通信系统设计方案。建立了完善的MRR星间通信系统模型,研究了随机指向误差对MRR通信系统平均中断概率和平均误码率的影响,推导了平均中断概率和平均误码率与瞬时信噪比的函数关系,并完成了数值仿真。仿真结果表明:所设计的MRR星间通信系统在1 Gbps通信速率和200 km通信距离条件约束下,平均中断概率及平均误码率均可优于10^(-6)量级。To meet the requirements of information sharing,fast response,low Swap and real-time data exchange among formation flying micro satellites,a laser communication system based on Modulated retroreflector(MRR)was proposed.System model of MRR based intersatellite communication was established.The impact of random pointing error on the average outage probability and bit error rate(BER)was studied.The function relationship of average outage probability,bit error rate with instantaneous signal-to-noise ratio was deduced.The numerical simulation based on the function was completed.The simulation results showed that the average outage probability and average BER of the MRR intersatellite communication system designed in this paper were better than 1E-6 magnitude under the constraints of 1 Gbps communication rate and 200 km communication distance.

关 键 词：编队卫星星间激光通信 调制反射器 星间激光组网 低SWaP值 

分 类 号：TN929.13[电子电信—通信与信息系统]