Single Chip Receiver for GNSS and LEO Constellations

J. Cookman, G. Gutt, D. Lawrence

Abstract:	The market for location technology has expanded beyond traditional navigation to include other applications like geo-tagging, geo-fencing, asset tracking, location based services, and location based authentication. Many of these applications can benefit from the availability of accurate position information indoors. Positioning performance using traditional GNSS satellite constellations is generally at its weakest indoors, so other technologies are being explored to fill this gap. One promising technology is the Boeing Time and Location (BTL) system, which uses the Iridium LEO constellation to transmit specially structured positioning signals that can penetrate deep indoors. Boeing and iKare are working together to deliver solutions to government and commercial markets. Boeing is engaged with government customers presently. The Satelles division of iKare Corporation plans to commercial launch products and services leveraging BTL technology in 2014. The SiRFstarVxp™ is the latest location chip from CSR Technology, Inc., providing state of the art GNSS positioning for commercial applications. It also incorporates a flexible secondary RF chain for reception of non-GNSS signals, including Wi-Fi and cellular, which can be used to enhance the overall positioning performance. In this paper, we describe how this secondary RF chain can be leveraged to receive BTL signals, enabling accurate positioning indoors. This paper includes an overview of the BTL system, a description of the SiRFstarVxp™ architecture, and indoor positioning performance results using a prototype receiver.
Published in:	Proceedings of the 26th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2013) September 16 - 20, 2013 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	2835 - 2839
Cite this article:	Cookman, J., Gutt, G., Lawrence, D., "Single Chip Receiver for GNSS and LEO Constellations," Proceedings of the 26th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2013), Nashville, TN, September 2013, pp. 2835-2839.
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