Electrodynamic geophones beyond the limit of capacity
- Authors: Dergach P.A.1, Yushin V.I.1
-
Affiliations:
- Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
- Issue: Vol 53, No 4 (2017)
- Pages: 280-285
- Section: Article
- URL: https://journals.rcsi.science/0747-9239/article/view/177420
- DOI: https://doi.org/10.3103/S0747923917040028
- ID: 177420
Cite item
Abstract
Low-frequency deconvolution of precise digital records of seismic and industrial vibrations allows significant expansion of the frequency range of electrodynamic geophones, limited only by the deconvolution noise, which is represented by increased instrumental noise. A dependence of deconvolution noise on the decrease rate of a sensor’s natural frequency and the level of initial instrumental noise is assessed theoretically. A method and a simple stand for the experimental evaluation of deconvolution quality are proposed and an example of a hundredfold virtual decrease in natural frequency of the sensor used in the real record is presented.
About the authors
P. A. Dergach
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Author for correspondence.
Email: DergachPA@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090
V. I. Yushin
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Email: DergachPA@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090