Synchronization of remote clocks
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United States of America Patent
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Jul 23, 2013
Grant Date -
Jun 21, 2012
app pub date -
Dec 15, 2010
filing date -
Dec 15, 2010
priority date (Note) -
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Abstract
A system for synchronizing a first clock and a second clock includes a receiver associated with the first clock, configured to receive a remote pulse from the second clock. The remote pulse has a pulse repetition frequency and spectral characteristics that are known to the local clock. The system also includes a local pulse emitter configured to create a local pulse at the first clock, and optics configured to align the local pulse and the remote pulse. The system further includes an interferometer configured to create an interference pattern between the local pulse and the remote pulse. A controller is provided that is configured to calculate a time delay between the first clock and the second clock based on the interference pattern between the local pulse and the remote pulse.
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