MEASURING HURST EXPONENTS WITH THE FIRST RETURN METHOD

MEASURING HURST EXPONENTS WITH THE FIRST RETURN METHOD
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用第一返回法测量 HURST 指数

DOI:
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发表时间:
1994
期刊:
影响因子:
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通讯作者:
K. Måløy
K. Måløy
中科院分区:
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文献类型:
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作者:
A. Hansen;T. Engøy;K. Måløy

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被引文献

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第一种回归方法已被证明是确定自仿射曲面的赫斯特指数H的一种有效方法。我们讨论了它的基础和对标度的一些修正,这是充分估计H所必须考虑的。使用该方法,我们分析了一组已知赫斯特指数的人工生成的曲线,并将结果与傅立叶分析进行了比较。我们还讨论了待分析曲面具有带有最大值或最小值的曲线偏差的情况。在这种情况下,与第一返回直方图相关联的标度指数与赫斯特指数H之间的关系不同于无偏情况。
The First Return method has proven to be an efficient method for determining the Hurst exponent, H, of self-affine surfaces. We discuss its foundations and some corrections to scaling which must be taken into account for an adequate estimation of H. Using this method, we analyze a set of artificially generated curves with known Hurst exponent and compare the result with Fourier analysis. We also discuss the case where the surface to be analyzed has a curved bias with a maximum or minimum. In this case, the relation between the scaling exponents associated with the first-return histograms and the Hurst exponent H is different from the unbiased case.