Accession Number:

ADA256232

Title:

Frequency Shifts in a Rubidium Frequency Standard due to Coupling to Another Standard

Descriptive Note:

Technical rept.

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA ELECTRONICS TECHNOLOGY CENTER

Report Date:

1991-10-01

Pagination or Media Count:

15.0

Abstract:

Highly reliable timing systems, such as used on board satellites, may incorporate a hot standby atomic clock besides the active one. RF couplings between them may affect the performance of the active clock. We have investigated the effect of such couplings between two rubidium atomic clocks and found that they will add an oscillatory term to the Allan Variance of the active clock, degrading its frequency stability, and that under certain circumstances they may also shift the active clocks operating frequency. We discuss these two effects in detail, and establish the level of isolation required to render them negligible. Atomic clock, Allan variance, RF coupling.

Subject Categories:

  • Electrical and Electronic Equipment
  • Test Facilities, Equipment and Methods
  • Electricity and Magnetism
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE