TAG: atomic clock

Bill Supports eLoran as GPS Backup

March 27, 2015By

A bi-partisan group of legislators led by Congressman John Garamendi (D-Calif.) has introduced a bill that would require the U.S. Secretary of Defense to establish a backup for GPS within three years using eLoran. The National Positioning, Navigation, and Timing Resilience and Security Act of 2015, H.R. 1678, was co-sponsored by Congressmen Duncan Hunter (R-Calif.), Peter DeFazio (D-Ore.), and Frank LoBiondo (R-N.J). Garamendi is the... read more

Dark-Matter Detectives: the Clocks Aboard GPS Satellites

November 18, 2014By
darkmatter

“Networks of correlated atomic clocks, some of them already in existence, such as the Global Positioning System, can be used as a powerful tool to search for topological defect dark matter, thus providing another important fundamental physics application for the ever-improving accuracy of atomic clocks,” write physicists Andrei Derevianko and Maxim Pospelov in the current issue of Nature Physics journal.... read more

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The Adventure of the Atomic Clock

April 9, 2014By
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In consulting my notebooks for the spring of 2014, I find many remarkable cases that engaged the attention of my intimate friend Mr. Sherlock Holmes. The intrigue into which we were drawn by the visiting American, Geo. P. Hess, probed the unforeseen effects of a launchpad fire, the mysterious slide to the right of two system segments, and the enigma of the vanishing leaders. read more

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Anritsu Offers Atomic Clock for Spectrum Master without Need for GPS

February 24, 2014By

Anritsu Company is launching an internal atomic clock option for its MS2720T Spectrum Master handheld spectrum analyzer that allows users to acquire excellent frequency accuracy, including in environments in which the GPS cannot be used. Integrating the atomic clock inside the MS2720T provides field engineers and technicians with a durable, handheld spectrum analyzer that can deliver the extremely high accuracy... read more

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Orolia to Supply Atomic Clocks for Galileo Satellites

October 17, 2013By
Passive hydrogen maser.

Orolia has finalized the contracts to supply Rubidium atomic clocks (Rubidium Atomic Frequency Standard, RAFS) and passive hydrogen masers to equip eight satellites for Galileo’s Full Operational Capability Phase II program. The two new contracts, totaling 14.5 million euros, follows the authorization to proceed received in June 2012 for the manufacture of these two types of high-precision clocks. Oriola brands... read more

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Spectratime Atomic Clocks Selected for Eight Galileo Satellites

June 18, 2012By

Spectratime, a world-leading provider of atomic clocks and a business of the Orolia Group, has announced it has been selected to provide the Rubidium atomic clocks and passive hydrogen masers for eight satellites for Europe’s Galileo GNSS. Spectratime expects this Authorization to Proceed will lead to a final contract for the manufacture of these two types of high precision clocks, estimated at 14 million euros, by summer 2012. read more

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NIST and Metrology

June 11, 2012By

A few months ago at a speaking engagement, I took questions from the audience after my presentation. The audience was made up of GPS enthusiasts, GPS equipment vendors, and evidently GPS neophytes as well, because the last question was asked by a young lady, from a large well known government user segment, who was intrigued by but obviously knew little about the inner workings of GPS. Her question so stunned me and the audience that it brought the questions to an abrupt end. Thank goodness no one actually laughed out loud, and frankly I was so incredulous that I almost gave an impertinent answer that would not have served any purpose other than to embarrass the young lady and expose some insensitivity on my part. No, fortunately, after recovering from the initial shock due to the naiveté of the question, I answered her with a straight face, because it seemed to be an honest and sincere question. read more

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