Earticle

초록

영어

The rapid development of various kinds of aerospace application systems requires the appropriate high-accuracy time and frequency standard. In order to establish suitable time and frequency standard in aerospace, based on the establishment of aerospace satellite visual model, we simulate the satellite visual time of 3-layer satellite constellation, including GEO satellite(Geostationary Earth Orbit), IGSO (Inclined GeoSynchronous Orbit)satellites and MEO(Medium Earth Orbit) satellites. The visual features of this satellite constellation have been gained. Combining with the major influencing factors of satellite clock offset error, we study the layered aerospace time synchronization architecture and give the advantage of the architecture and the choice of time synchronization method. Starting from the establishment of the time synchronization link demand, we simulate the variation range of intersatellite distance of the layered aerospace time synchronization architecture, and give budget results of GEO-GEO link in laser band and GEO-IGSO and GEO-MEO links in S-band and Ku-band. The results show that GEO-GEO link can achieve to more than 3Gb/s data transmission rate on condition that the transmitting power is 0.5W, the antenna diameter is only 20cm; if the S-band transmission rate is in excess of 2Mb/s, when the antenna is 1m in diameter, the transmitting power needed is about 50W. In the Ka-band, 1m antennas only need 1W transmitting power to provide an intersatellite data transmission rate higher than 2Mb/s. Research results serves as reference for the establishment of layered aerospace time synchronization architecture and improvement of time synchronization precision.

목차

Abstract
 1. Introduction
 2. Component and Visual Simulation of Satellite Constellation
  2.1. Component of Satellite Constellation
  2.2. Satellite Mutual Visual Model
  2.3. Visual Time Simulation of Satellite Constellation
 3. Design of Aerospace Time Synchronization System Based on Layered Architecture
  3.1. The Major Influencing Factors of Satellite Clock Offset Error
  3.2. Design of Layered Aerospace Time Synchronization System
  3.3. The Advantage of Layered Aerospace Time Synchronization system and the choice of Time Synchronization methods
 4. Simulation of the Variation Range of Intersatellite Distance of the Layered Aerospace Time Synchronization Architecture
  4.1. Major Parameters of Intersatellite Link budget
  4.2. Simulation of the Variation Range of Intersatellite Distance of the Architecture
 5. Intersatellite Link Budget Method
  5.1. Intersatellite Laser Link Budget Method
  5.2. Intersatellite Microwave Link Budget Method
 6. Intersatellite Link Budget Results of the Laered Aerospace Time Synchronization Architecture
  6.1. GEO-GEO Laser Link Budget Results
  6.2. GEO-MEO and GEO- IGSO Microwave Links Budget Results
 7. Conclusions
 Acknowledgements
 References

키워드

저자

• Huang Feijiang [ Department of Electronics and Communication Engineering Changsha University No.98 Hongshan Road, Changsha 410022, China ]
• Li Xiaoyong [ School of Information and Electronic Engineering, Zhejiang University of Science and Technology No.318 Liuhe Road, Hangzhou 310023, China ]
• Sun Liping [ Department of Electronics and Communication Engineering Changsha University No.98 Hongshan Road, Changsha 410022, China ]
• Sheng wang [ Department of Electronics and Communication Engineering Changsha University No.98 Hongshan Road, Changsha 410022, China ]
• Zhang Wenxi [ Department of Electronics and Communication Engineering Changsha University No.98 Hongshan Road, Changsha 410022, China ]
• Liu Guangcan [ Department of Electronics and Communication Engineering Changsha University No.98 Hongshan Road, Changsha 410022, China ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605