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Improved conditional averaging technique for plasma fluctuation diagnostics

机译:改进的条件平均技术用于血浆波动诊断

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摘要

Conditional averaging is one of the standard methods to detect large-scale structures in turbulent flows. By means of synthetic and experimental data it is shown that the usual trigger conditions are not sufficient to obtain reliable structure amplitudes. Our analysis shows that the amplitude reduction is caused by trigger jitter and a finite probability for trigger errors to occur. Using an improved conditional averaging scheme based upon a cross-correlation analysis, the possibility to remove these errors and to obtain correct amplitudes is shown.
机译:条件平均是检测湍流中大型结构的标准方法之一。通过综合和实验数据表明,通常的触发条件不足以获取可靠的结构振幅。我们的分析表明,幅度降低是由触发抖动和触发错误发生的有限概率引起的。使用基于互相关分析的改进的条件平均方案,显示了消除这些误差并获得正确幅度的可能性。

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