EHF频段航空宽带卫星通信系统性能分析  

Performance analysis on aeronautical broadband satellite communication system in EHF band

作　　者：赵柏 郭雨晴 黄清泉 欧阳键 林敏[1] 翟继强[3] ZHAO Bai;GUO Yuqing;HUANG Qingquan;OUYANG Jian;LIN Min;ZHAI Jiqiang(College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;College of Communications Engineering,Army Engineering University of PLA,Nanjing 210007,China;Xi'an Institute of Space Radio Technology China Academy of Space Technology,Xi'an 710100,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]陆军工程大学通信工程学院,江苏南京210007 [3]中国空间技术研究院西安分院,陕西西安710100

出　　处：《南京邮电大学学报（自然科学版）》2021年第5期36-44,共9页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：重点国际合作项目(61720106003);国家自然科学基金(61801234);上海航天科技创新基金(SAST2019⁃095);电子信息装备体系研究国防科技重点实验室基础研究项目(DXZT⁃JC⁃ZZ⁃2019⁃009);南京邮电大学引进人才科研启动基金(NY220111);江苏省研究生科研与实践创新计划项目(KYCX20_0814,KYCX20_0815)资助项目。

摘　　要：为了适应民航市场中客舱通信需求的飞速增长,近几年来航空宽带卫星通信系统成为卫星通信领域的一个研究热点课题。针对工作在极高频(Extremely High Frequencies,EHF)频段的航空卫星通信系统,研究了其系统中断性能和系统遍历容量(Ergodic Capacity,EC)。具体而言,在通信卫星为高通量卫星(High Throughput Satellite,HTS)且采用高增益点波束天线进行信号发送,而飞机采用相控阵天线接收卫星信号的情况下,分析了EHF频段衰落特性以及相控阵天线相移误差对系统性能的影响,推导出系统中断概率(Outage Probability,OP)和遍历容量的闭合表达式。计算机仿真不仅验证了理论分析的正确性,而且分析了典型参数对系统性能的影响,从而为航空宽带卫星通信系统的设计提供了参考。To accommodate the rapid growth of in⁃flight communication needs in the civil aviation market,an aeronautical broadband satellite communication system has become a hot topic in the field of satellite communication in recent years.For the aeronautical satellite communication system operating on the extremely high frequency(EHF)band,the system outage performance and ergodic capacity(EC)are analyzed.Specifically,the influences of the EHF band fading characteristics and phased shift errors for the array antenna on the system performance are analyzed,as well as the closed⁃form expressions of system outage probability(OP)and the EC are derived.Specically,the communication satellite is a the high throughput satellite(HTS)and uses a high⁃gain spot beam antenna for transmit signal transmission,and the aircraft uses a phased array antenna to receive satellite signals.The validity of the theoretical analysis is confirmed and the effect of representative parameters on system performance is analyzed by computer simulations,thus providing a reference for the design of aeronautical broadband satellite communication systems.

关 键 词：航空宽带卫星通信 极高频 相控阵天线 性能分析 

分 类 号：TN92[电子电信—通信与信息系统]