DocumentCode :
846261
Title :
In search of the best clock
Author :
Allan, David W. ; Weiss, Marc A. ; Peppler, Trudi K.
Author_Institution :
NBS, Boulder, CO, USA
Volume :
38
Issue :
2
fYear :
1989
fDate :
4/1/1989 12:00:00 AM
Firstpage :
624
Lastpage :
630
Abstract :
The authors show that significant gains in clock performance have been and can be obtained through the algorithms which optimize the clock readings and through international comparisons now available via satellite. Algorithms for processing are more important than the proportionate attention generally given them. In fact, to date, one of the main ways the authors have been able to investigate some of the long-term performance aspects of the millisecond pulsar, PSR 1937+21, is by using such optimization algorithms. The authors assert that since there are indications in the pulsar data of variations which could be explained as arising from the influence of gravitational waves, these long-term stability studies take on a new importance. Improved long-term stability of earth-bound clock systems will significantly assist the study of the incredibly stable spin rates of these neutron stars
Keywords :
clocks; frequency stability; measurement standards; neutron stars; optimisation; physics computing; pulsars; stellar rotation; PSR 1937+21; atomic standards; clock readings; earth-bound clock systems; gravitational waves; international comparisons; long-term stability; millisecond pulsar; neutron stars; optimization algorithms; pulsar data; satellite; spin rates; stellar rotation; Algorithm design and analysis; Calibration; Clocks; Computer errors; Frequency conversion; NIST; Neutrons; Sampling methods; Satellites; Stability;
fLanguage :
English
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9456
Type :
jour
DOI :
10.1109/19.192363
Filename :
192363
Link To Document :
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