Time Signals (8700924583)
NIST researchers transferred ultraprecise time signals over the air between a laboratory on NIST's campus in Boulder, Colorado, and nearby Kohler Mesa. Signals were sent in both directions, reflected off a mirror on the mesa, and returned to the lab, a total distrance of approximately two kilometers. The two-way technique overcomes timing distortions on the signals from turbulence in the atmosphere, and shows how next-generation atomic clocks at different locations could be linked wirelessly to improve distribution of time and frequency information and other applications.
See also www.nist.gov/pml/div686/time-043013.cfm
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