G-Effects on Oscillator Performance in GPS Receivers

Anthony R. Pratt

Abstract:	The 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. Whilst the vibration (motion) of the antenna is not under the designer's control, the &­ sensitivity of the oscillator is amenable to choice. The quantitative effects are analysed with reference to the design of the XR3/PLM GPS receiver for ground-mobile use. It is shown that the avoidance of loss of lock of GPS 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.
Published in:	Proceedings of the International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1988) September 19 - 23, 1988 The Broadmoor Hotel Colorado Spring, CO
Pages:	495 - 502
Cite this article:	Pratt, Anthony R., "G-Effects on Oscillator Performance in GPS Receivers," Proceedings of the International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1988), Colorado Spring, CO, September 1988, pp. 495-502.
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