Title :
Frequency and time stability of GPS and GLONASS clocks
Author :
Daly, Peter ; Kitching, Ian D. ; Allan, David W. ; Peppler, Trudi K.
Author_Institution :
Leeds Univ., UK
Abstract :
The Global Positioning System (GPS) and the GLONASS (USSR satellite navigation system) are systems which use atomic clocks in the space environment. The time inaccuracy and time instability, and the frequency inaccuracy and frequency instability, of both systems are studied. Contributing to the investigation are the frequency offsets, the frequency drifts, and methods of estimating these states as seen through clock noise, measurement noise, and uncertainties associated with other relevant system parameters
Keywords :
clocks; frequency measurement; frequency stability; measurement standards; radionavigation; random noise; satellite relay systems; time measurement; GLONASS clocks; GPS; Global Positioning System; USSR satellite navigation system; atomic clocks; clock noise; frequency drifts; frequency offsets; frequency stability; measurement noise; time stability; uncertainties; Atomic clocks; Frequency estimation; Frequency measurement; Global Positioning System; Measurement uncertainty; Noise measurement; Satellite navigation systems; Stability; State estimation; Working environment noise;
Conference_Titel :
Frequency Control, 1990., Proceedings of the 44th Annual Symposium on
Conference_Location :
Baltimore, MD
DOI :
10.1109/FREQ.1990.177490
