How to Optimize GNSS Signals and Codes for Indoor Positioning

J.A. Avila-Rodriguez, S. Wallner, G.W. Hein

Abstract:	Although GNSS is capable of providing accurate location services in most of the areas, there is still a promising and challenging market to be exploited: the indoor market. The needs of the new users go far beyond the traditional transport sector and the indoor market gains in weight day by day. It is a fact that indoor navigation is meant to play an outstanding role in the future GNSS world. As new target applications are appearing, the challenging indoor environment gains in interest for the navigation community. The expectations that are arising provide therefore the motivation to study in depth the real performance of the current signals, signal waveform, code structure and of the codes, with special emphasis on the new Galileo and GPS codes. In order to cope with the particular problematic that Indoor positioning represents, this paper suggests and analyses a set of parameters that define the nature of indoor environments. This is of major importance since optimizing codes or a signal structure requires first to know which parameters are to be used as figures of merit to be maximized or minimized. Indeed, a signal or a code that might be optimal in an open environment could be extremely bad in situations like those multipath is characterised for.
Published in:	Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006) September 26 - 29, 2006 Fort Worth Convention Center Fort Worth, TX
Pages:	2418 - 2426
Cite this article:	Avila-Rodriguez, J.A., Wallner, S., Hein, G.W., "How to Optimize GNSS Signals and Codes for Indoor Positioning," Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006), Fort Worth, TX, September 2006, pp. 2418-2426.
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