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Instruments and Experimental Techniques

, Volume 61, Issue 6, pp 809–814 | Cite as

A Function Generator for Calibration of Electromagnetic-Field Recorders

  • S. V. Pilgaev
  • A. V. Larchenko
  • M. V. Filatov
  • Yu. V. Fedorenko
  • O. M. Lebed
ELECTRONICS AND RADIO ENGINEERING
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Abstract

A low-frequency function generator for calibrating measuring channels of electromagnetic-field recorders in the frequency range from one hertz to tens of kilohertz is described. One feature of the device is the stability and high-precision phase synchronization of the output signal with a coordinated universal time provided by a GPS/GLONASS receiver. The application of the developed device made it possible to increase the accuracy of calibration of the measuring channels of receivers in a very low frequency range and, as a consequence, the accuracy of measuring the phase velocities of artificial and natural electromagnetic signals of ultralow- and very-low-frequency bands.

Notes

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • S. V. Pilgaev
    • 1
  • A. V. Larchenko
    • 1
  • M. V. Filatov
    • 1
  • Yu. V. Fedorenko
    • 1
  • O. M. Lebed
    • 1
  1. 1.Polar Geophysical InstituteApatityRussia

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