NASA's Deep Space-Bound Atomic Clock Has Activated | Space
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Using GPS, NASA tests atomic clock navigation
Atomic clock - Wikipedia
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NASA to Test New Atomic Clock - Universe Today
How GPS brings time to the world | Septentrio
Rubidium Frequency Standard | Time and Navigation
Tickety-Tock! An Even More Accurate Atomic Clock | WAMU
Atomic clocks to receive qualification from FEI for GPS IIIF satellites
:quality(70)/cloudfront-us-east-1.images.arcpublishing.com/archetype/EM6EM7MII5HOLDUTRXDELV6DTI.jpg "Could chip-sized atomic clocks replace GPS?")
Could chip-sized atomic clocks replace GPS?
New miniature atomic clock aids positioning in difficult environments - GPS World
Connect" to an atomic clock in space! GPS, DCF77 - Electronics-Lab.com
The Satellite Clock | GEOG 862: GPS and GNSS for Geospatial Professionals
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Facebook open source PCIe Timing Card combines atomic clock and off-air GPS reception
Keeping Time at NIST | NIST
Atomic clock - Wikipedia
