• Corpus ID: 216036141

A Review of Contemporary Atomic Frequency Standards.

@article{Schmittberger2020ARO,
  title={A Review of Contemporary Atomic Frequency Standards.},
  author={Bonnie L. Schmittberger and David R. Scherer},
  journal={arXiv: Atomic Physics},
  year={2020}
}
Atomic frequency standards are used to generate accurate and precise time and frequency, enabling many communications, synchronization, and navigation systems in modern life. GPS and other satellite navigation systems, voice and data telecommunications, and timestamping of financial transactions all rely on precise time and frequency enabled by atomic frequency standards. This review provides a snapshot and outlook of contemporary atomic frequency standards and the applications they enable. We… 

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References

SHOWING 1-10 OF 93 REFERENCES

Atomic frequency standards: A survey

The last comprehensive survey on atomic frequency standards was done by McCoubrey [1]. This survey reviews the more recent historical background of atomic frequency standards leading to the present

Historical Review of Atomic Frequency Standards Used in Space Systems - 10 Year Update

Abstract : A 1996 paper estimated "that the total number of space-borne atomic frequency standards (AFS) is no more than several hundred" [1, p. 24]. The number of atomic frequency standards in space

A historical review of atomic frequency standards used in space systems

The remarkable navigational accuracy currently enjoyed by the users of satellite navigation systems is in major part due to the excellent performance of the on-board atomic frequency standards

Atomic frequency standards and clocks

The principles of operation of atomic frequency standards are described. Details are given of their physical construction. Their characteristics as well as their availability, principal uses and

Mercury Ion Clock for a NASA Technology Demonstration Mission

The Jet Propulsion Laboratory is developing a linear ion-trap-based mercury ion clock, referred to as DSAC (DeepSpace Atomic Clock), which is expected to provide a new capability with broad application to space-based navigation and science.

Frequency Standards: Basics and Applications

Preface.1. Introduction.2. Basics of Frequency Standards.3. Characterization of Amplitude and Frequency Noise.4. Macroscopic Frequency References.5. Atomic and Molecular Frequency References.6.

Towards the optical second: verifying optical clocks at the SI limit

The pursuit of ever more precise measures of time and frequency motivates redefinition of the second in terms of an optical atomic transition. To ensure continuity with the current definition, based

Atomic clock performance enabling geodesy below the centimetre level

Local optical clock measurements that surpass the current ability to account for the gravitational distortion of space-time across the surface of Earth are demonstrated and improved techniques allow the measurement of a frequency difference with an uncertainty of the order of 10–19 between two independent optical lattice clocks, suggesting that they may be able to improve state-of-the-art geodetic techniques.

Standards of Time and Frequency at the Outset of the 21st Century

After 50 years of development, microwave atomic clocks based on cesium have achieved fractional uncertainties below 1 part in 1015, a level unequaled in all of metrology. The past 5 years have seen

Tight real-time synchronization of a microwave clock to an optical clock across a turbulent air path.

Tight, real-time synchronization of a remote microwave clock to a master optical clock over a turbulent 4-km open air path via optical two-way time-frequency transfer is demonstrated.
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