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%.

Joint International Conference on Astrophysics for Young Scientists (JICA) (1; 2017; Byurakan, Armenia). The First Joint International Conference on Astrophysics for Young Scientists (JICA) [Электронный ресурс]: Oktober 3-7, 2017, Byurakan, Armenia: [book of proceedings]. — Электрон. текстовые дан. (1 файл : 3,69 Мб). — Saint-Petersburg: Peter the Great St. Petersburg Polytechnic University, 2017. — Загл. с титул. экрана. — Электронная копия печатной публикации 2017 г. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/i17-449.pdf>.