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Time and frequency applications.

H Hellwig1

  • 1US Air Force Office of Sci. Res., Bolling AFB, Washington, DC.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|January 1, 1993
PubMed
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Precise time and frequency signals from atomic clocks and quartz oscillators are crucial for navigation, communication, and scientific research. Their generation, comparison, and dissemination enable technologies like GPS and radioastronomy.

Area of Science:

  • Metrology
  • Physics
  • Engineering

Background:

  • Atomic clocks and quartz crystal oscillators offer high precision in time and frequency signal generation.
  • Accurate time and frequency are fundamental for modern technological systems.

Purpose of the Study:

  • To provide an overview of the capabilities of atomic clocks and quartz oscillators.
  • To survey the diverse applications of precise time and frequency signals.
  • To estimate the global usage of these timing devices.

Main Methods:

  • Review of atomic clock and quartz oscillator performance metrics.
  • Analysis of time and frequency signal generation, comparison, and dissemination techniques.
  • Case studies of applications in navigation, communication, and science.

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Main Results:

  • Detailed examination of the precision achievable with atomic clocks and quartz oscillators.
  • Exploration of time/frequency uses in Global Positioning System (GPS), communication networks, general relativity, and radioastronomy.
  • Estimation of the worldwide number of operational atomic clocks and crystal oscillators.

Conclusions:

  • Atomic clocks and quartz oscillators are indispensable for high-precision timing applications.
  • The dissemination and application of accurate time and frequency signals underpin critical global infrastructure.
  • Continued advancements in timing technology are essential for future scientific and technological progress.