Development of Indoor Navigation System using Asynchronous Pseudolites

Changdon Kee, Haeyoung Jun, Doohee Yun, Byungyeon Kim, Youngbaek Kim, Bradford W. Parkinson, Thomas Langenstein, Sam Pullen and JungTaek Lee

Abstract:	The Global Positioning System (GPS) is now attracting worldwide attention as a navigation sensor. One of the advantages of GPS is that you can find your position using GPS receiver wherever you go; however, it is not always true. If you are in an obstructed environment, for example, in urban canyons or inside a building, you cannot navigate with GPS receivers. This paper shows the possibility of navigation using GPS receivers even in blocked environments or indoors. The paper describes the navigation system that was developed and implemented at Seoul National University (SNU) GPS Lab. This system uses pseudolites and GPS receivers. The paper then shows the results of experiments and the accuracy of the system. The results of the experiments are satisfactory. The RMS error of the static test is 1 mm horizontally and 2 mm vertically. And the RMS error of the dynamic experiment is 5.6 mm horizontally and 15 mm vertically. This Indoor Navigation System can be used independently or with GPS satellites where they are visible.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	1038 - 1045
Cite this article:	Kee, Changdon, Jun, Haeyoung, Yun, Doohee, Kim, Byungyeon, Kim, Youngbaek, Parkinson, Bradford W., Langenstein, Thomas, Pullen, Sam, Lee, JungTaek, "Development of Indoor Navigation System using Asynchronous Pseudolites," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 1038-1045.
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