Adaptive Capon beamforming for lensless electron cyclotron emission imaging with high spatial resolution

DOI HANDLE PDF 19 References Open Access
  • Idei, H.
    Research Institute for Applied Mechanics, Kyushu University
  • Fukuyama, M.
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Sakai, S.
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Mishra, K.
    Institute for Plasma Research
  • Nishimura, K.
    Research Institute for Sustainable Humanosphere, Kyoto University
  • Ikezoe, R.
    Research Institute for Applied Mechanics, Kyushu University
  • Onchi, T.
    Research Institute for Applied Mechanics, Kyushu University
  • Ido, T.
    Research Institute for Applied Mechanics, Kyushu University
  • Hanada, K.
    Research Institute for Applied Mechanics, Kyushu University

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Abstract

Electron cyclotron emission (ECE) imaging diagnostics incorporating a lensless approach have been developed for measurements involving active spatial selectivity and direction-of-arrival estimation. The Capon method for adaptive-array analysis was proposed to improve the spatial resolution of the two-dimensional ECE imaging technique. Broadband noise source emissions were used to simulate the ECE to verify the practical effectiveness of the Capon method in the ECE imaging. Multiple noise source emission positions were properly estimated with a high spatial resolution using the Capon method.

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