Method for estimating the frequency-wavenumber resolved power spectrum density using the maximum entropy method for limited spatial points

T. Kobayashi, T. Nishizawa, M. Sasaki, M. Yoshinuma, K. Ida

Research output: Contribution to journalArticlepeer-review

Abstract

A combination of the Fourier transform and the maximum entropy method for estimating the frequency-wavenumber resolved power spectrum density is proposed. After illustrating the physical insight of the maximum entropy method by using synthetic test data, capability of the proposed method is tested using numerical simulation data. The method is also applied to experimental data obtained by the beam emission spectroscopy in the Large Helical Device. All of those examinations show that the proposed method provides more plausible results than conventional methods when the available spatial points are limited.

Original languageEnglish
Article number045011
JournalPlasma Physics and Controlled Fusion
Volume63
Issue number4
DOIs
Publication statusPublished - Apr 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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