Atomic Time Scales

1 January 1972

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement

Vol. 21 (4) , 396-400
https://doi.org/10.1109/tim.1972.4314053

Abstract

The International Atomic Time (IAT) is a mean of local independent atomic time scales. The current procedure uses an algorithm ensuring the long-term stability, with fixed weights roughly proportional to the number of operating cesium standards. We found that the scale unit of IAT varied by probably less than 2 × 10-13 in relative value between January 1970 and December 1971. We tested some methods of weighting: they did not bring any substantial improvement. Our work suggests a more promising approach and also a means of maintaining both stability and accuracy.

Keywords

LABORATORIES
CLOCKS
FREQUENCY
STABILITY
ATOMIC MEASUREMENTS
OBSERVATORIES
EXTRAPOLATION
TESTING
WEIGHT MEASUREMENT
TIME MEASUREMENT

This publication has 1 reference indexed in Scilit:

Around-the-World Atomic Clocks: Predicted Relativistic Time Gains
Science, 1972