Title :
The development of a computer model of a GPS disciplined oscillator to aid error budget determination
Author :
Davis, John A. ; Rougeaux, Benedicte
Author_Institution :
Centre for Time Metrol., Nat. Phys. Lab., Teddington, UK
Abstract :
A computer model has been developed to study the performance of a GPS Disciplined Oscillator (GPSDO). The model has been constructed to assist in the determination of GPSDO uncertainty budgets. All major components of a GPSDO are included in the model including the GPS system, the GPSDO´s local oscillator and the hardware and software that controls the GPSDO´s output. An account is given of the development of the model and assumptions made in its formulation. Illustrations of the model´s use are also presented with some interesting preliminary results
Keywords :
Global Positioning System; digital simulation; electronic engineering computing; frequency standards; measurement errors; measurement standards; radio receivers; radiofrequency oscillators; time measurement; GPS disciplined oscillator; GPSDO uncertainty budgets; NPL; antenna coordinate error; computer model; error budget; local oscillator; selective availability; Antenna measurements; Computational modeling; Computer errors; Frequency; Global Positioning System; Hardware; Local oscillators; Satellite antennas; Satellite constellations; Uncertainty;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840764
