当前位置: X-MOL 学术Int. J. Satell. Commun. Netw. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Analysis of the communication links between the AlSat-1b satellite and the ground station: The impact of the Auto Tracking system on antenna pointing accuracy
International Journal of Satellite Communications and Networking ( IF 1.7 ) Pub Date : 2021-02-20 , DOI: 10.1002/sat.1396
Saiah Bekkar Djelloul Saiah 1 , Elhabib Bensikaddour 1 , Ali Kaddouri 1 , Redouane Belbachir 1 , Boualem Nasri 1 , Djamel Eddine Baba Hamed 1
Affiliation  

The communication links between a satellite and the Earth station (ES) are exposed to many impairments such as noise, rain, and atmospheric attenuations. They are also prone to loss such as those resulting from antenna pointing and polarization. The Algerian Earth Observation satellite AlSat-1b is designed to accomplish its mission in S-band (Telecommands and Telemetry) and X-band (images) frequencies in low Earth orbit (LEO). The ground segment (GS) of this satellite, situated in Oran, Algeria, is based on the X/Y antenna mounting system with 7.3-m dish diameter. This large reflector can cause antenna pointing errors. The Antenna Control Unit (ACU) implemented in this station can be configured with or without an AutoTrack system. In this work, operational tests and analysis of the different communication links between AlSat-1b and the ground station are presented. The obtained results clearly show that the quality of the S-band links can reliably and efficiently satisfy the requirements without the use of the AutoTrack. On the contrary, the use of AutoTrack is necessary in order to obtain an improved level of link quality in the X band.

中文翻译:

AlSat-1b 卫星与地面站通信链路分析:自动跟踪系统对天线指向精度的影响

卫星和地球站 (ES) 之间的通信链路会受到许多损害,例如噪声、雨水和大气衰减。它们也容易出现损耗,例如由天线指向和极化引起的损耗。阿尔及利亚地球观测卫星 AlSat-1b 旨在完成其在低地球轨道 (LEO) 的 S 波段(遥控和遥测)和 X 波段(图像)频率的任务。这颗卫星的地面部分 (GS) 位于阿尔及利亚奥兰,基于 X/Y 天线安装系统,天线直径为 7.3 米。这个大反射器会导致天线指向错误。该站中实施的天线控制单元 (ACU) 可以配置有或没有 AutoTrack 系统。在这项工作中,介绍了 AlSat-1b 和地面站之间不同通信链路的运行测试和分析。获得的结果清楚地表明,S 波段链路的质量可以在不使用 AutoTrack 的情况下可靠有效地满足要求。相反,必须使用 AutoTrack,以便在 X 频段中获得更高级别的链路质量。
更新日期:2021-02-20
down
wechat
bug