Development of ground-based search-coil magnetometer for Near-Earth space research

Jehyuck Shin, Khan Hyuk Kim, Ho Jin, Hyomin Kim, Jong Woo Kwon, Seungah Lee, Jung Kyu Lee, Seongwhan Lee, Geonhwa Jee, Marc R. Lessard

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We report on development of a ground-based bi-axial Search-Coil Magnetometer (SCM) designed to measure time-varying magnetic fields associated with magnetosphere-ionosphere coupling processes. The instrument provides two-axis magnetic field wave vector data in the Ultra Low Frequency or ULF (1 mHz to 5 Hz) range. ULF waves are well known to play an important role in energy transport and loss in geospace. The SCM will primarily be used to observe generation and propagation of the subclass of ULF waves. The analog signals produced by the search-coil magnetic sensors are amplified and filtered over a specified frequency range via electronics. Data acquisition system digitizes data at 10 samples/s rate with 16-bit resolution. Test results show that the resolution of the magnetometer reaches 0.1 pT/√Hz at 1 Hz, and demonstrate its satisfactory performance, detecting geomagnetic pulsations. This instrument is scheduled to be installed at the Korean Antarctic station, Jang Bogo, in the austral summer 2016-2017.

Original languageEnglish (US)
Pages (from-to)509-515
Number of pages7
JournalJournal of Magnetics
Volume21
Issue number4
DOIs
StatePublished - 2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • Ionosphere
  • Magnetometer
  • Magnetosphere
  • Search-coil magnetometer
  • ULF waves

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