GPS location augmentation using today's cellular communication information

H. Hartinger, D. Trummer

Abstract:	The on-board hardware of location based and telematic services usually consists of a positioning and a telemetry device. Nowadays, it is very common to use GPS for positioning and cellular communication for telemetry. However, location based and telematic services which use GPS positioning face weaknesses due to (i) the vulnerability of the GPS signals to jamming, (ii) signal obstruction and (iii) the military control of GPS. Therefore, any business critical location service which relies on GPS positioning only, is confronted by a high financial risk for the operator. This risk can be reduced by employing a second “GPS-independent” positioning technology. However, the use of an additional positioning system may increases the cost of the system. We have developed a GPS location augmentation technique based on information measured by the cellular communications device of the on-board hardware. The key development requirements for this technique are automatic replacement of GPS positioning in the case of outages, independence of the technique from the cellular network carrier and the use of readily available cellular communication hardware. Tests of the GPS position augmentation technique show that it is especially useful for vehicle tracking applications, such as road tolling. In the paper the ability of the technique to identify the use of toll sections is demonstrated on potential toll roads in Austria.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	370 - 377
Cite this article:	Hartinger, H., Trummer, D., "GPS location augmentation using today's cellular communication information," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 370-377.
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