Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/10874
DC Field | Value | Language |
---|---|---|
dc.date.accessioned | 2018-02-28T11:55:07Z | en |
dc.date.available | 2018-02-28T11:55:07Z | en |
dc.date.issued | 2018 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10874 | en |
dc.description.abstract | Many real-life signals and, in particular, in the space physics domain, exhibit variations across different temporal scales. Hence, their statistical momenta may depend on the time scale at which the signal is studied. To identify and quantify such variations, a time-frequency analysis has to be performed on these signals. The dependence of the statistical properties of a signal fluctuation on the space and time scales is the distinctive character of systems with nonlinear couplings among different modes. Hence, assessing how the statistics of signal fluctuations vary with scale will be of help in understanding the corresponding multiscale statistics of such dynamics. This paper presents a new multiscale data analysis technique, the adaptive local iterative filtering (ALIF), which allows to describe the multiscale nature of the geophysical signal studied better than via Fourier transform, and improves scale resolution with respect to discrete wavelet transform. The example of geophysical signal, to which ALIF has been applied, is ionospheric radio power scintillation on L band. ALIF appears to be a promising technique to study the small-scale structures of radio scintillation due to ionospheric turbulence. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Journal of Geophysical Research: Space Physics | en |
dc.relation.ispartofseries | /123 (2018) | en |
dc.title | Adaptive Local Iterative Filtering: A Promising Technique for the Analysis of Nonstationary Signals | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.description.pagenumber | 1031–1046 | en |
dc.identifier.doi | 10.1002/2017JA024153 | en |
dc.description.obiettivoSpecifico | 2A. Fisica dell'alta atmosfera | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Piersanti, Mirko | en |
dc.contributor.author | Materassi, Massimo | en |
dc.contributor.author | Cicone, Antonio | en |
dc.contributor.author | Spogli, Luca | en |
dc.contributor.author | Zhou, H. | en |
dc.contributor.author | Ezquer, R. G. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto dei Sistemi Complessi, Consiglio Nazionale delle Ricerche | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.orcid | 0000-0001-5207-2944 | - |
crisitem.author.orcid | 0000-0002-8107-9624 | - |
crisitem.author.orcid | 0000-0003-2310-0306 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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2017_Piersanti_et_al_ALIF_JGR.pdf | 8.5 MB | Adobe PDF | View/Open |
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