Bulletin of Taras Shevchenko National University of Kyiv. Astronomy, no. 66, p. 20-25 (2022)

Approbation of wave dispersion analysis using multispacecraft methods

B. Petrenko, PhD Student
Taras Shevchenko National University of Kyiv, Kyiv, Ukraine,
L. Kozak, PhD
Taras Shevchenko National University of Kyiv, Kyiv, Ukraine,
Space Research Institute of the NASU and the SSAU, Kyiv, Ukraine,
E. Kronberg, PhD
Geophysics Department of Earth and Environmental Sciences University of Munich, Munich, Germany,
I. Ballai, PhD
School of Mathematics & Statistics at the University of Sheffield, UK


Methods of wave analysis of time series are analyzed in detail, namely: two-spacecraft phase difference, beamforming, k-filtering, MSR (Multi-point Signal Resonator) technique. These multispacecraft methods allow to obtain a set of wave power peaks with different spatial scales at the same frequency, which is a significant advantage over the single-spacecraft approach due to existence a significant number of wave modes at the same frequency in space plasmas. The software implementation of these methods with their successful testing on artificial data is executed. The effectiveness of each method for detecting maxima in the power spectra of the magnetic field is demonstrated.

Key words
Dispersion analysis, multispacecraft method, phase difference, beamforming, k-filtration, MSR technique.


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DOI: https://doi.org/10.17721/BTSNUA.2022.66.20-25