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Publication details

Dynamic process analysis by moments of extreme orders

Journal Article

Šimberová Stanislava, Suk Tomáš

serial: Astronomy and Computing vol.14, p. 43-51

project(s): GA15-16928S, GA ČR

keywords: high-order moments, principal component analysis, frequency analysis

abstract (eng):

We experimentally illustrate performance of the method on simulated data. A typical development of the dynamic phenomenon is modeled by the moment time curve. Then applications to the real data sequences follow: solar active regions observed in the spectral line H alpha (wavelength 6563 angstrom-Ondrejov and KanzelhOhe observatories) in two different angular resolutions. The frequency analysis of the first few principal components showed common periods or quasi-periods of all examined events and the periods specific for individual events. The detailed analysis of the moment's methodology can contribute to the observational mode settings. The method can be applied to video sequences obtained by observing systems with various angular resolutions. It is robust to noise and it can work with high range of sampling frequencies.


21.12.2012 - 16:10