TIDGET-T: A Low Cost GPS Time Sensor That Maintains Precise Time During Extended Periods of GPS Signal Loss

Gengsheng Zhang and Alison Brown

Abstract:	Modem power and digital mobile communication reworks require precise time for efficient operation. The Global Positioning System (GPS) provides a highly precise time reference andis becoming the preeminent time source for many applications. However, significant problems occur when GPS operation is attempted in a high Electra Magnetic Interference ( EMI) environment that affects the reliability and performance of the GPS reference. NAVSYS Corporation has developed the TIDGET-T time reference which combines low cost commercial GPS technology with a robust and reliable architecture to provide precision timing performance in challenging, high EM1 environments for a GPS signal. The innovative SmartClock algorithm implemented in this system is designed to optimally calibrate the reference clock error during periods when GPS satellites are in view, and maintain precise time when GPS is not available. This significantly improves the reliability and performance of the timing receiver.
Published in:	Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996) June 19 - 21, 1996 Royal Sonesta Hotel Cambridge, MA
Pages:	749 - 752
Cite this article:	Zhang, Gengsheng, Brown, Alison, "TIDGET-T: A Low Cost GPS Time Sensor That Maintains Precise Time During Extended Periods of GPS Signal Loss," Proceedings of the 52nd Annual Meeting of The Institute of Navigation (1996), Cambridge, MA, June 1996, pp. 749-752.
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