Estimación Predictiva del Error de Intervalo de Tiempo Basado en las Señales del GPS SynPaQ III con Problemas de Holdover (Predictive Estimation of the Time Interval Error Signals GPS SynPaQ III Based with Holdover Problems)

J Zavala De Paz (jopazavala@hotmail.com)1, Y Shmaliy (shmaliy@salamanca.ugto.mx)2


1Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Instituto Politécnico Nacional, Unidad Querétaro
2División de Ingenierías Campus Irapuato-Salamanca de la Universidad de Guanajuato

This paper appears in: Revista IEEE América Latina

Publication Date: March 2013
Volume: 11,   Issue: 2 
ISSN: 1548-0992


Abstract:
This paper presents a new algorithm for compensation of the time interval error (TIE), applying an unbiased p-step predictive FIR filter (with and without prediction) to the signal global positioning system (GPS) SynPaQ III with problems of holdover, using as reference a rubidium atomic clock. The TIE refers to errors resulting in system stability. The error holdover is a problem that at present does not possess solution and the systems that present this type of error produce lines of erroneous synchronization in the signal of the GPS. The results from this study show that it is possible to emulate an atomic clock using a GPS receiver.

Index Terms:
Time interval error, unbiased predictive FIR filter, GPS, holdover   


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