Reference Oscillator Short-Term Drift as it’s Sensed by GNSS Receiver

Alexander Y. Shatilov

Abstract:	An experimental technique for reference oscillator phase drift record and analysis has been developed. One goal of the technique is that oscillator drift estimates are practically cleaned from noise. The other goal is that experimental setup accounts for the effect of not only reference oscillator, but whole carrier demodulation chain in GNSS receiver (including frequency down converter). This makes the recorded phase drift absolutely according to what’s sensed by real GNSS receiver. Due to proposed technique, a new approach for estimation of the GNSS Receiver limitations caused by reference oscillator has been developed. Some practical parameters have been found for typical oscillators: the dependency between PLL dynamic error and Allan deviation; the minimum 3rd order PLL bandwidth and its dependency on Allan deviation; the optimum correlator accumulation time.
Published in:	Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014) September 8 - 12, 2014 Tampa Convention Center Tampa, Florida
Pages:	2625 - 2634
Cite this article:	Shatilov, Alexander Y., "Reference Oscillator Short-Term Drift as it’s Sensed by GNSS Receiver," Proceedings of the 27th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2014), Tampa, Florida, September 2014, pp. 2625-2634.
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