TY - JOUR

T1 - High-precision frequency synthesizer for geophysical and biotechnical measurements using laser meter

AU - Rybushkin, A. Yu

AU - Fomin, Yu N.

AU - Zhmud, V. A.

AU - Vasil'Ev, V. A.

AU - Kusyakin, N. A.

AU - Semibalamut, V. M.

AU - Dimitrov, L. V.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2019/11/19

Y1 - 2019/11/19

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85077780491&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1333/6/062030

DO - 10.1088/1742-6596/1333/6/062030

M3 - Conference article

AN - SCOPUS:85077780491

VL - 1333

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 6

M1 - 062030

T2 - International Conference on Information Technologies in Business and Industries, ITBI 2019

Y2 - 13 February 2019 through 15 February 2019

ER -