Least Squares Autoregressive (Maximum Entropy) Spectral Estimation for Fourier Spectroscopy and its Application to the Electron Cyclotron Emission from Plasma

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概要

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• A new procedure for the maximum entropy spectral estimation is studied for the purpose of data processing in Fourier transform spectroscopy. The autoregressive model fitting is examined under a least squares criterion based on the Yule-Walker equations. An AIC-like criterion is suggested for selecting the model order. The principal advantage of the new procedure lies in the enhanced frequency resolution particularly for small values of the maximum optical path-difference of the interferogram. The usefulness of the procesure is ascertained by some numerical simulations and further by experiments with respect to a highly coherent submillimeter wave and the electron cyclotron emission from a stellarator plasma.

• 核融合科学研究所の論文

著者

• Tetsuka T.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Kawahata K.

  Research Information Center Institute Of Plasma Physics Nagoya University

• Sato M.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• Tsukishima T.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• Sakai K.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• Iwama N.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• Inoue A.

  Research Information Center, Institute of Plasma Physics, Nagoya University

• Tsukishima T.

  Research Information Center Institute Of Plasma Physics Nagoya University:faculty Of Engineering Nag

• Kawahata K.

  Plasma Physics Laboratory Kyoto University

• Iwama N.

  Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electrical E

• Tsukishima T.

  Research Information Center Institute Of Plasma Physics Nagoya University:department Of Electrical E

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