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- Title
An instability estimation of precision time intervals.
- Authors
Bespal'ko, V.; Boole, E.; Savarovskiy, J.
- Abstract
A method for estimating the instability of time intervals (TIs) is described, when they are measured simultaneously (in parallel) by two measuring units. The method is based on the calculation of the covariance of parallel measurement results and statistical averaging and is intended to investigate instabilities in picosecond and subpicosecond ranges. The relative error of the method is estimated by a computing experiment and depends on the amount of the measured data and error values of the used TI meters. An example of the setup, which allows one to evaluate the TI instability up to 0.4 ps with a relative error of no more than 10%, is given. The experimental data on the TI instability in the picosecond (for AFG3252 two-channel generator, it varies from 2.4 to 5.2 ps for intervals of the microsecond range) and subpicosecond (for the TI generator based on a quartz voltage-controlled oscillator from the FORDAHL company, it is 0.86 ps) ranges are obtained.
- Subjects
ESTIMATION theory; ANALYSIS of covariance; ELECTRIC potential; ELECTRIC oscillators; DIGITAL oscilloscopes; MEASUREMENT errors; CONFIDENCE intervals
- Publication
Instruments & Experimental Techniques, 2012, Vol 55, Issue 3, p377
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S0020441212020194