SWS Academic Research eLibraryEarth & Planetary Sciences

Scholarly record

HETERODYNE SIGNAL FILTERING FOR LASER MEASURING SYSTEMS

Vadim Zhmud

First published: 2018-06-20https://doi.org/10.5593/sgem2018/2.2/s08.029View metrics

Abstract

Laser systems are widely used for measuring the most important physical values with the highest accuracy. In particular, laser measuring systems are used to identify earthquake precursors in monitoring tidal rock fluctuations. In many cases, signals from laser measuring systems contain noises that need to be filtered out. The signal component in this case has the form of a harmonic oscillation, the frequency and phase of which change and these changes carry information about the measured quantity. This signal should not only be retained, but also made the least possible delay in it. A filtering method is proposed for heterodyne signal transformation with transfer to a high frequency and then returning to the original frequency. In the intermediate stage, the result of the heterodyne transformation is filtered using a bandpass filter, and in the final stage only a low-pass filter is used. The method has been investigated by simulation. The filtration method is useful for creating a system of phase locking of one laser to another, used in a laser seismic oscillation sensor.

Publication Impact Profile

PlumX
  • Citations
  • CrossRef - Citation Indexes: 1
  • Scopus - Citation Indexes: 4
  • Captures
  • Mendeley - Readers: 1
PLUMX see details

Publication details

Title
HETERODYNE SIGNAL FILTERING FOR LASER MEASURING SYSTEMS
Authors
Vadim Zhmud
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Informatics, Geoinformatics and Remote Sensing
Publisher
STEF92 Technology
Year
2018
Pages
227-234
SWS Citekey
Zhmud20188227234
ISSN
1314-2704
ISBN
978-619-7408-40-9
Language
en
Publication type
Conference Paper
Keywords
information processinglaser physicsearthquake precursorsaccuracyfiltration
References0
0references registered for this publication

Structured references will appear here after the reference import pass. The count is preserved now so the scholarly record is not incomplete.

Citing literature

Number of times cited according to Crossref: 1

Open DOICrossref metadataOpenCitations
View or Download full articleAccess options
Full paper accessChoose SWS login, librarian support, or instant article download.

SWS access login

Login as SWS Scientific Committee

Authors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.

For librarian assistance: [email protected]

Purchase Instant Access

48-hour online accessComing soon
Online-only accessComing soon
Download the full article in PDF formatEUR 35
  • Article can be downloaded after successful payment.
  • Article may be used according to SWS library access terms.
  • Article cannot be redistributed.
Get full paper

Back to publication list