Theory of Indoor GPS by Using Reradiated GPS Signal

Hiroshi Isshiki, Teruya Sugiyama, Hideo Yasuda, Akira Uchiyama, Toshiyuki Saito, Takao Hujino, Taizo Nanbu, Hidenao Iwahashi and Taro Kimura

Abstract:	A novel positioning method based on GPS technology in a space where GPS signal can't be received is discussed. If positioning by using GPS receiver is possible even in such spaces, a seamless location on ground surfaces, inside buildings, in underground spaces and so on becomes possible. The merit may be significant. For this kind of purpose, pseudolites are used usually. In the present paper, a new method based on reradiation of GPS signals is proposed. In the present paper, the above mentioned reradiation approach is investigated theoretically. A method of experiment and experimental results are also discussed. In spaces similar to those mentioned above, there exist problems such as near-far and multi-reflection problems. The effects and solutions are proposed through experiments by wired transmission, those in a radio dark room and those in an actual environment. The phase distance is much more effective than the pseudo range.
Published in:	Proceedings of the 2002 National Technical Meeting of The Institute of Navigation January 28 - 30, 2002 The Catamaran Resort Hotel San Diego, CA
Pages:	587 - 597
Cite this article:	Isshiki, Hiroshi, Sugiyama, Teruya, Yasuda, Hideo, Uchiyama, Akira, Saito, Toshiyuki, Hujino, Takao, Nanbu, Taizo, Iwahashi, Hidenao, Kimura, Taro, "Theory of Indoor GPS by Using Reradiated GPS Signal," Proceedings of the 2002 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 2002, pp. 587-597.
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