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Thermal and Quantum Mechanical Noise of a Superfluid GyroscopeA potential application of a superfluid gyroscope is for real-time measurements of the small variations in the rotational speed of the Earth, the Moon, and Mars. Such rotational jitter, if not measured and corrected for, will be a limiting factor on the resolution potential of a GPS system. This limitation will prevent many automation concepts in navigation, construction, and biomedical examination from being realized. We present the calculation of thermal and quantum-mechanical phase noise across the Josephson junction of a superfluid gyroscope. This allows us to derive the fundamental limits on the performance of a superfluid gyroscope. We show that the fundamental limit on real-time GPS due to rotational jitter can be reduced to well below 1 millimeter/day. Other limitations and their potential mitigation will also be discussed.
Document ID
Document Type
Conference Paper
Chui, Talso
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Penanen, Konstantin
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Proceedings of the 2004 NASA/JPL Workshop on Physics for Planetary Exploration
Subject Category
Physics (General)
Distribution Limits
Work of the US Gov. Public Use Permitted.

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