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Mobile terminal positioning technique for dynamic satellite constellations

โœ Scribed by Zhao, Wei ;Tafazolli, Rahim ;Evans, Barry

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
170 KB
Volume
16
Category
Article
ISSN
0737-2884

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โœฆ Synopsis

A mobile terminal positioning scheme in Non-Geostationary satellite constellation systems is presented. The scheme utilises the propagation delay and Doppler shifts experienced in such dynamic constellations. The various factors that affect the accuracy of a user position have been identified and thoroughly investigated; to demonstrate the user position accuracy results, an ICO-10 like satellite constellation was used with different measurement noise conditions. The scheme does not impose any additional signalling on the air-interface and the user position can be estimated at an LES with no assistance from the mobile terminal. It will also be shown that the positioning accuracy error is minimised when dual-satellite diversity is utilised. In this paper, we also discuss the applications of this user position information and its impact on management of mobility and resources.

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