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.

中文翻译：

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有限空间点的最大熵法估计频率波数分解的功率谱密度的方法

提出了傅里叶变换和最大熵方法相结合的估计频率波数分解功率谱密度的方法。在通过使用合成测试数据说明了最大熵方法的物理见解之后，使用数值模拟数据测试了该方法的能力。该方法还适用于大型螺旋装置中通过束发射光谱法获得的实验数据。所有这些检查表明，当可用空间点受到限制时，与传统方法相比，所提出的方法提供了更合理的结果。