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A feasibility study of a mobile communication network using a constellation of low Earth orbit satellites

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4 Author(s)
Richharia, M. ; Dept. of Electron. & Electr. Eng., Surrey Univ., Guildford, UK ; Hansel, P.H. ; Bousquet, P.W. ; O'Donnell, M.

An effort was made to study whether the increased survivability, true global coverage, and reduced path loss of a LEO (low Earth orbit) network could be utilized to give a viable mobile communication system. The architecture of such a network is complex, but it is expected that the use of advanced technology can overcome most limitations. An optimum constellation is considered, and the first three layers of a digital network are examined. Under certain simplifying assumptions it is shown that the proposed configuration is viable and compares favorably with a similar geostationary network with regards to the overall space-segment cost. The cost benefit begins to favor the LEONET for simpler spacecraft. It is also noted that it may be possible to scale down the LEO constellation to a small size so as to provide continuous coverage above ≈70° latitude, where geostationary satellites are ineffective. This hybrid architecture is also likely to minimize interference with geostationary satellite systems in the congested mobile bands

Published in:

Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE

Date of Conference:

27-30 Nov 1989