Original scientific paper

https://doi.org/10.17559/TV-20160203223352

Improved Method for Long-Term Frequency Stability Measurement Using Vector Voltmeter

Ivica Milanovic orcid.org/0000-0001-7494-3755 ; Technical Test Center, Vojvode Stepe 445A, 11000 Belgrade, Serbia
Zeljko Beljic ; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Predrag Rakonjac orcid.org/0000-0003-0978-6057 ; Technical Test Center, Vojvode Stepe 445A, 11000 Belgrade, Serbia
Zoran Mitrovic orcid.org/0000-0001-7660-0844 ; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia

Abstract

This paper proposes a novel approach for the improvement of the long-term frequency stability measurement using an obsolete phase meter. The hypothesis of the paper states it is possible to fully automate measurement process and reduce measurement time using the standard method supported by bespoke PC software. This theory was examined in detail and experimentally validated using GPS standard method. The results of the experiment confirmed that measurement time can be reduced more than 50 %, at the expense of a measurement uncertainty increase. Still, the estimated measurement uncertainty of the proposed method is more than satisfactory for the calibration purpose of the most common oscillator types including rubidium frequency standards.

Keywords

automation; frequency; long-term stability; phase angle; vector voltmeter

Hrčak ID:

199127

URI

https://hrcak.srce.hr/199127

Publication date:

21.4.2018.

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