Flight Test Using Pseudolite System

Taikjin Lee and Changdon Kee

Abstract:	In recent days, navigation technology becomes more important as location based services (LBS) in many fields. Commercial LBS requires that navigation system should be inexpensive and available anytime and anywhere. If we consider these requirements, it is out of question that GPS is the most favorite system in the world. However, GPS has several serious problems. The Problems are that GPS does not operate indoors and downtown very well and GPS has big errors in vertical direction with respect to horizontal. This is because GPS satellites are about 20,000km above the ground so that indoor signals are too weak to be used in signal processing and constellation of satellites is bad in vertical. To solve these problems, many research activities have been done around the world since 1990s. This paper is also one of them and we will introduce one possible solution, which uses pseudolite. We developed pseudolite indoor navigation system a few years ago. Our research goal is to make pseudolite navigation system which is easy to install, easy to use, simple system, reliable system and ubiquitous system. And in this paper, I implement the system and proofed it using flight test. Now, we install the system outdoors and develop pseudolite navigation system mixed with GPS.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	2750 - 2761
Cite this article:	Lee, Taikjin, Kee, Changdon, "Flight Test Using Pseudolite System," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 2750-2761.
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