Centimeter Accuracy Stand-alone Indoor Navigation System By Synchronized Pseudolite Constellation

Doohee Yun and Changdon Kee

Abstract:	In recent days, navigation technology becomes more important as location based service (LBS) such as E911 and telematics are considered as attractive business fields. Commercial LBS requires that navigation system should be inexpensive and available anytime and anywhere - indoors and outdoors. If we consider these requirements, it is out of question that GPS is the most favorite system in the world. However, GPS has a serious problem. The problem is that GPS does not operate indoors well. This is because GPS satellites are about 20,000km above the ground so that indoor signals are too weak to be tracked in GPS receiver. This is what so called "Indoor Navigation Problem". To solve this problem, many researches have been done around the world since 1990s. This paper is also one of them and we will introduce an excellent solution by use of synchronized pseudolite constellation.
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:	213 - 225
Cite this article:	Yun, Doohee, Kee, Changdon, "Centimeter Accuracy Stand-alone Indoor Navigation System By Synchronized Pseudolite Constellation," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 213-225.
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