High-precision frequency synthesizer for geophysical and biotechnical measurements using laser meter

A. Yu Rybushkin, Yu N. Fomin, V. A. Zhmud, V. A. Vasil'Ev, N. A. Kusyakin, V. M. Semibalamut, L. V. Dimitrov

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференциирецензирование


The paper describes a frequency synthesizer for expanding applications and improving the accuracy of a laser device for measuring ultra-small displacements. Such devices are used to measure Earth's crust deformations. The specified device allows measuring the increment of lengths based on 25 m in two mutually orthogonal directions. Year-round use of such device in an observatory tunnel inside a mountain, such as, for example, in the Talaya Observatory near Lake Baikal, allows for detailed recording of Earth's crust deformations by studying the long-term and relatively short-term components of these vibrations. The main use of these results consists in registering a nonstandard change in the deformations, which can serve as a precursor of earthquakes, which causes the highest relevance of these studies. The device contains two lasers tied to each other in frequency with a frequency difference defined from the outside. The binding is carried out by a phase locked loop system, and a reference sample oscillator forms the external frequency. For some applications, the highest accuracy of the frequency tuning of the reference oscillator is required, which is achieved only by using a frequency synthesizer specially designed for this purpose. The paper describes the main circuit solutions for this synthesizer and the results of its use as part of the specified high-precision laser gauge of displacements and deformations of Earth's crust.

Язык оригиналаанглийский
Номер статьи062030
ЖурналJournal of Physics: Conference Series
Номер выпуска6
СостояниеОпубликовано - 19 ноя 2019
СобытиеInternational Conference on Information Technologies in Business and Industries, ITBI 2019 - Novosibirsk, Российская Федерация
Продолжительность: 13 фев 201915 фев 2019

Предметные области OECD FOS+WOS



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