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Proceedings Paper

TDRS satellite application to LEO satellite data link
Author(s): Hu Jiang; Xue-min Shen; Wenbin Gong; Jinpei Yu
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Paper Abstract

With the development of space technologies, satellite-based data link is becoming more and more popular due to its wide coverage. However, it needs tens of LEO satellites, short for Low Earth Orbiting satellites, to cover the whole Earth in real time. Therefore it requires huge investment to fulfill such an engineering. If several TDRS satellites, short for Tracking and Data Relaying Satellites, are included, the engineering investment might as well be acceptable. Herein, simulations of coverage and some particular performances are presented in three cases, i.e., a single LEO satellite plus one TDRS satellite, a single LEO satellite plus two TDRS satellite, a single LEO satellite plus three TDRS satellite. Simulations have shown that in the case of one LEO satellite and one TDRS satellite, the revisiting period is 5726s,which will shorten the revisiting period by 57%;the encounter frequency between one LEO and one TDRS is 11 times daily; the average duration for every encounter is 2128s. The performances of one LEO satellite and two TDRS satellites are presented as followings:the revisiting period is 2819s,which will shorten the revisiting period by 79%;the encounter frequency among one LEO and two TDRS is 23 times daily;the average duration for every encounter is 2049s.The performances of one LEO satellite and two TDRS satellites are presented as followings:the revisiting period is 1780s,which will shorten the revisiting period by 87%;the encounter frequency among one LEO and two TDRS is 34 times daily;the average duration for every encounter is 2067s. The above simulations have indicated TDRS satellites can greatly improve LEO satellite coverage and related performances. For china customers, the space orbits of TDRS are limited by either geographical positions or by orbital space regulation in equator. Such limitations make sparsely-distributed LEO satellites global real-time data link difficult, especially above western hemisphere. LEO satellite data link above some of the western hemisphere has to be retarded. Delayed data link are hardly acceptable for some emergency rescues. Before the constellation of tens of LEO communication satellites is deployed in space, it might be a good choice to realize LEO satellite data link via TDRS satellites for China users.

Paper Details

Date Published: 24 October 2013
PDF: 5 pages
Proc. SPIE 8889, Sensors, Systems, and Next-Generation Satellites XVII, 88891Y (24 October 2013); doi: 10.1117/12.2026920
Show Author Affiliations
Hu Jiang, Shanghai Engineering Ctr. for Micro-satellites (China)
Shanghai Institute of Microsystem and Information Technology (China)
Xue-min Shen, Shanghai Engineering Ctr. for Micro-satellites (China)
Shanghai Institute of Technical Physics (China)
Wenbin Gong, Shanghai Engineering Ctr. for Micro-satellites (China)
Jinpei Yu, Shanghai Engineering Ctr. for Micro-satellites (China)
Shanghai Institute of Microsystem and Information Technology (China)


Published in SPIE Proceedings Vol. 8889:
Sensors, Systems, and Next-Generation Satellites XVII
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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