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

• Kobayashi, Tatsuya

• Nishizawa, Takashi

• Sasaki, Makoto

• YOSHINUMA, Mikiro

• IDA, Katsumi

抄録

0000-0001-6835-1569

0000-0001-5669-1937

0000-0002-0585-4561

0000-0003-1804-2308

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.

収録刊行物

• Plasma Physics and Controlled Fusion

  Plasma Physics and Controlled Fusion 63 (4), 045011-, 2021-02-19

  IOP Publishing

キーワード

• maximum entropy method
• dispersion relation
• two-dimensional power spectrum density
• beam emission spectroscopy

詳細情報

• CRID: 1050288757449248640
• NII論文ID: 120007116689
• HANDLE: 10655/00012586
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10604
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles