Experimental comparison of statistical and spatio-temporal probe diagnostics
Experimental comparison of statistical and spatio-temporal probe diagnostics
复制标题
统计和时空探针诊断的实验比较
DOI：
10.1088/0741-3335/49/10/008
复制
发表时间：
2007
影响因子：
2.2
通讯作者：
A. Piel
中科院分区：
文献类型：
--
作者：
D. Block;I. Teliban;A. Piel
等离子体湍流和相关传输过程的实验通常需要具有高时空分辨率的诊断。用于此目的的标准工具是统计方法，例如互相关分析或条件平均。高空间分辨率的实现是以异步记录和随后的平均过程为代价的。最近，我们证明诊断阵列与超分辨率算法相结合可以实现相对较高的空间分辨率[1]。本文比较了两种技术在相同实验条件下的结果。它解决了是否需要加大时空诊断力度来研究湍流系统中大规模结构的动力学以及统计方法的结果在多大程度上可靠的问题。
Experiments on plasma turbulence and related transport processes generally require diagnostics with high spatio-temporal resolution. Standard tools for this purpose are statistical methods like cross-correlation analysis or conditional averaging. High spatial resolution is achieved at the expense of an asynchronous recording and a subsequent averaging process. Recently, we had shown that diagnostics arrays in combination with a super-resolution algorithm can achieve a comparably high spatial resolution [1]. This paper compares the results of both techniques applied to identical experimental conditions. It addresses the question of whether the higher efforts for spatio-temporal diagnostics are needed to study the dynamics of large-scale structures in a turbulent system and to what extent the results of statistical approaches are reliable.