Title: g-EFFECTS ON OSCILLATOR PERFORMANCE IN GPS RECEIVERS
Author(s): Anthony R. Pratt
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 36, Number 1
Pages: 63 - 76
Cite this article: Pratt, Anthony R., "g-EFFECTS ON OSCILLATOR PERFORMANCE IN GPS RECEIVERS", NAVIGATION, Journal of The Institute of Navigation, Vol. 36, No. 1, Spring 1989, pp. 63-76.
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Abstract: This paper considers the effects of vibration of the antenna and oscillator in a GPS receiver. These combine to cause a vibration-induced phase shift in the carrier phase tracking loop. While the vibration (motion) of the antenna is not under the designer’s control, the g-sensitivity of the oscillator is amenable to choice. The quantitative effects are analyzed with reference to the design of a GPS receiver for ground-mobile use. It is shown that the loss of lock ofGPS signals under severe vibration is avoidable. A well-designed equipment will exhibit increased carrier cycle slip when vibrated. This may be related to an equivalent loss of signal-to-noise ratio in mild cases.