Long-Range High-Accuracy UWB Ranging for Precise Positioning

H. Yu

Abstract:	In the densely-populated cities or indoor environments, limited visibility to satellites and severe multipath effects significantly corrupt the accuracy and reliability of satellite-based navigation systems. A terrestrial, highaccuracy positioning system may meet the need of “seamless navigation” in those challenging environments. Ultra-wideband (UWB) signal is a promising candidate for this application. This paper presents detailed material that supports the design of an innovative long-range UWB system for urban and indoor navigation for the first time. Subsequent to analysing the problems with existing positioning systems and the advantages of the UWB radio, it describes the basic requirements and the system architecture. Thereafter, the paper provides an end-to-end system architect’s perspectives on the various issues and challenges involved in the design of UWB physical layer. Specifically, to achieve greater range, some of the design tradeoffs have been considered based on the maximum link distance analysis. Moreover, to acquire high-accuracy ranging performance in the receiver, a new set of ternary codes with zero-correlation zones have been constructed, allowing for significant suppression of multiuser interference. Finally, the paper discusses the performance of the proposed system in terms of probability of detection and false alarm.
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:	83 - 94
Cite this article:	Yu, H., "Long-Range High-Accuracy UWB Ranging for Precise 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. 83-94.
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