Frequency Shifts in a Rubidium Frequency Standard due to Coupling to Another Standard
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 clock's 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1991
- Accession Number
- ADA256232
Entities
People
- B. Jaduszliwer
- R. A. Cook
- Robert P. Frueholz
Organizations
- The Aerospace Corporation