Compensation of long term oscillator drift using signals from di

Details Compensation of long term oscillator drift using signals from di Compensation of long term oscillator drift using signals from di

1997-06-18

1998-12-08

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Molecular resonance stabilization

331 19, 331 941, H03L 726

Patent

active

058476130

ABSTRACT:
A method and apparatus for compensating for the long term drift of an oscillator. Signals from hydrogen clouds are received and processed to generate an adjustment signal, which is used to adjust the frequency of the oscillator. The adjustment signal is derived from a frequency spectrum midpoint estimated from the signal strength of the received signals.

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Alekseev, V.A., et al., "Synchronization of Time Scales at the Points Used in Radio Interferometry with Ultralong Bases (RULB) from Observations of Maser Sources of Cosmic Radio Emission", Radiopys Quantum Electron, vol. 18, No. 12, Dec. 1975, pp. 1315-1321.
Taylor, Jr., Joseph H., "Millisecond Pulsars: Nature's Most Stable Clocks", Proceedings of the IEEE, vol. 79, No. 7, Jul. 1, 1991, pp. 1054-1062.
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Clark, Thomas A., et al., "Synchronization of Clocks by Very-Long-Baseline Interferometry", IEEE Transactions on Instrumentation and Measurement, vol. IM-28, No. 3, Sep. 3, 1979, pp. 184-187.

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