PPS Positioning in Weak Signal GPS Environments using a TIDGET Sensor

A.K. Brown, S. Stankevich, B.G. Johnson

Abstract:	This paper describes a GPS tracking solution that collects GPS broadband snapshots using NAVSYS’ patented TIDGET (“tracking widget”) sensor technology and postprocesses these snapshots to create a Precise Positioning System (PPS) solution using a SAASM receiver. This approach has the advantages of reducing the size, weight, cost and power of the electronics in the sensor while still producing a SAASM-based solutions for military tracking applications. Since the GPS signals do not have to be processed in real-time, enhanced signal processing algorithms can be applied using the SAASM correlator outputs that allow the digital signals to be optimally reprocessed using network assistance from a GPS base station, maximizing the probability of acquiring the GPS signals in a challenging environment and allowing acquisition at lower signal levels than can be achieved using conventional GPS tracking. This paper presents test results of this TIDGET-SAASM architecture showing its operation in normal and degraded GPS environments.
Published in:	Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010) September 21 - 24, 2010 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	2452 - 2456
Cite this article:	Brown, A.K., Stankevich, S., Johnson, B.G., "PPS Positioning in Weak Signal GPS Environments using a TIDGET Sensor," Proceedings of the 23rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2010), Portland, OR, September 2010, pp. 2452-2456.
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