METADATA IN ENGLISH
About the journal
SEISMICHESKIE PRIBORY, ISSN: 0131-6230, eISSN: 2312-6965, DOI: 10.21455/si,
English Translation: Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online),
On the problem of taking into account the effect
of meteorological factors on large precision systems:
A case study of the Baksan large-base laser interferometer
Sternberg Astronomical Institute, Moscow State University, Moscow, Russia
Abstract. The variations in ambient temperature and atmospheric pressure coincide in the diurnal and semi-diurnal frequency ranges with a series of lunar-solar tide waves, which distorts the measurement of the deformation of laser interferometers. Using the example of data from the Baksan laser interferometer at the SAI Moscow State University over a fifteen-year period, it is shown that the response of large measuring systems to these variations has a pronounced frequency dependence. Based on the constructed mathematical model, this problem is solved with the help of images of time series of deformation and meteorological factors in the frequency domain, obtained using the Fourier transform. A transient function was constructed in the form of a so-called aperiodic link, which takes into account the frequency dependence and the delay of thermoelastic deformation of the measuring system. As a result of the inverse transformation, we have a new time series of deformation without the effect of meteorological processes.
Keywords: deformations, lunar-solar tide, Fourier transform.
About the author
MYASNIKOV Andrey Vladimirovich – Cand. Sci. (Phys. and Math.), science researcher, Sternberg Astronomical Institute, Lomonosov Moscow State University. Universitetsky pr., 13, 119234, Moscow, Russia. Phone: +7 (495) 939-16-34. E-mail: email@example.com
Cite this article as: Myasnikov A.V. On the problem of taking into account the effect of meteorological factors on large precision systems: A case study of the Baksan large-base laser interferometer, Seismicheskie Pribory, 2019, Vol. 55, no. 2, pp. 27–38. [in Russian]. https://doi.org/10.21455/si2019.2-2