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Title: Cesium atomic clock for glonass satellite navigational system // The First Joint International Conference on Astrophysics for Young Scientists (JICA): Oktober 3-7, 2017, Byurakan, Armenia: [book of proceedings]
Creators: Petrov A. A.; Davydov V. V.; Popov A. S.; Lukashev N. A.
Imprint: Saint-Petersburg: Peter the Great St. Petersburg Polytechnic University, 2017
Collection: Общая коллекция
Subjects: Часы; Спутниковая навигация; cesium atomic clock; quantum frequency standard; frequency synthesizer; direct digital synthesis; magnetic field control unit
UDC: 681.113.94(063)
Document type: Article, report
File type: PDF
Language: English
Links: http://doi.org/10.18720/SPBPU/2/k17-47
Rights: Свободный доступ из сети Интернет (чтение, печать, копирование)

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One of the essential elements of satellite navigation system is an atomic clock. The proper operation of any navigation system depends on the performance of atomic clock. Several directions of modernization of the cesium atomic clocks are considered. New design of the frequency synthesis circuitry is presented. The theoretical calculations and experimental researches showed the decrease of step frequency tuning by several orders and improvement of spectral characteristics of the frequency synthesizer output signal. New magnetic field control unit eliminates one of the most important perturbing factors affecting on long-term frequency stability. Experimental research of the cesium atomic clock metrological characteristics showed the improvement of Allan variance by 10%.

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