Zobrazeno 1 - 10
of 75
pro vyhledávání: '"A. B. Pnev"'
Publikováno v:
Naučno-tehničeskij Vestnik Informacionnyh Tehnologij, Mehaniki i Optiki, Vol 18, Iss 2, Pp 220-227 (2018)
This paper reviews the method of semiconductor laser diode frequency stabilization by phase modulation. Also parameters are identified that affect the quality of stabilization and the estimation of Allan deviation is obtained. The pilot setup has bee
Externí odkaz:
https://doaj.org/article/b94c205acf054460bd84d2650393e2ef
Autor:
Konstantin V. Stepanov, Andrey A. Zhirnov, Tatyana V. Gritsenko, Roman I. Khan, Kirill I. Koshelev, Cesare Svelto, Alexey B. Pnev
Publikováno v:
Sensors, Vol 24, Iss 11, p 3338 (2024)
In the paper, a new method of phase measurement error suppression in a phase-sensitive optical time domain reflectometer is proposed and experimentally proved. The main causes of phase measurement errors are identified and considered, such as the inf
Externí odkaz:
https://doaj.org/article/ceecdf5b6e6e4f77b05fe74429ccce02
Autor:
Tatyana V. Gritsenko, Maria V. Orlova, Andrey A. Zhirnov, Yuri A. Konstantinov, Artem T. Turov, Fedor L. Barkov, Roman I. Khan, Kirill I. Koshelev, Cesare Svelto, Alexey B. Pnev
Publikováno v:
Sensors, Vol 24, Iss 7, p 2281 (2024)
In recent years, attention to the realization of a distributed fiber-optic microphone for the detection and recognition of the human voice has increased, whereby the most popular schemes are based on φ-OTDR. Many issues related to the selection of o
Externí odkaz:
https://doaj.org/article/5ac5efea878349f9821dfacc99289bf5
Publikováno v:
Sensors, Vol 24, Iss 5, p 1656 (2024)
This paper is dedicated to the investigation of the metrological properties of phase-sensitive reflectometric measurement systems, with a particular focus on addressing the non-uniformity of responses along optical fibers. The authors highlight chall
Externí odkaz:
https://doaj.org/article/ee9315be4f954f688008436ac36dd2d5
Autor:
Andrey A. Zhirnov, German Y. Chesnokov, Konstantin V. Stepanov, Tatyana V. Gritsenko, Roman I. Khan, Kirill I. Koshelev, Anton O. Chernutsky, Cesare Svelto, Alexey B. Pnev, Olga V. Valba
Publikováno v:
Sensors, Vol 23, Iss 10, p 4978 (2023)
The paper presents the application of a phase-sensitive optical time-domain reflectometer (phi-OTDR) in the field of urban infrastructure monitoring. In particular, the branched structure of the urban network of telecommunication wells. The encounter
Externí odkaz:
https://doaj.org/article/f4051f9f44b04b47b6715f9446f13b8a
Autor:
Ivan A. Barantsov, Alexey B. Pnev, Kirill I. Koshelev, Vadim S. Tynchenko, Vladimir A. Nelyub, Aleksey S. Borodulin
Publikováno v:
Sensors, Vol 23, Iss 2, p 582 (2023)
This article is devoted to the development of a classification method based on an artificial neural network architecture to solve the problem of recognizing the sources of acoustic influences recorded by a phase-sensitive OTDR. At the initial stage o
Externí odkaz:
https://doaj.org/article/2a29601e11f44c6ab4cdb5b8b9b261fa
Autor:
Konstantin V. Stepanov, Andrey A. Zhirnov, Stanislav G. Sazonkin, Alexey B. Pnev, Alexander N. Bobrov, Dmitriy A. Yagodnikov
Publikováno v:
Sensors, Vol 22, Iss 13, p 4781 (2022)
In this article, we study the possibility of gas turbine unit (GTU) monitoring using interferometric fiber optic sensors. We used the Mach–Zehnder interferometer (MZI) scheme, which can be easily implemented and simply installed on the turbine, and
Externí odkaz:
https://doaj.org/article/b05360482e274ef9bc138a8ffb1fab0f
Autor:
Andrey A. Zhirnov, Tatyana V. Choban, Konstantin V. Stepanov, Kirill I. Koshelev, Anton O. Chernutsky, Alexey B. Pnev, Valeriy E. Karasik
Publikováno v:
Sensors, Vol 22, Iss 7, p 2772 (2022)
We demonstrated a fiber optic distributed acoustic sensor based on a double Sagnac interferometer, using two wavelengths separated by CWDM modules. A mathematical model of signal formation principle, based on a shift in two signals analysis, was desc
Externí odkaz:
https://doaj.org/article/40b5ff0ea18242e287fa0dccd888f569
Autor:
Andrey A. Zhirnov, Konstantin V. Stepanov, Stanislav G. Sazonkin, Tatyana V. Choban, Kirill I. Koshelev, Anton O. Chernutsky, Alexey B. Pnev, Alexey O. Novikov, Dmitriy A. Yagodnikov
Publikováno v:
Sensors, Vol 21, Iss 23, p 7836 (2021)
In this study, an experimental study of the burning rate of solid fuel in a model solid propellant rocket motor (SRM) E-5-0 was conducted using a non-invasive control method with fiber-optic sensors (FOSs). Three sensors based on the Mach–Zehnder i
Externí odkaz:
https://doaj.org/article/d211e97df0ea40569ed831e42df4c771
Autor:
Konstantin V. Stepanov, Andrey A. Zhirnov, Kirill I. Koshelev, Anton O. Chernutsky, Roman I. Khan, Alexey B. Pnev
Publikováno v:
Sensors, Vol 21, Iss 21, p 7077 (2021)
We present a theoretical and experimental study in which we increased the sensitivity of a phase-sensitive optical time-domain reflectometer (phi-OTDR). This was achieved by constructing coils in the sensor cable, which increased the total amplitude
Externí odkaz:
https://doaj.org/article/010c43aac9074f21ba3dd5d1a78cfa98