Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5050
DC Field | Value | Language |
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dc.contributor.authorall | Materassi, M.; Istituto dei Sistemi Complessi del CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy | en |
dc.contributor.authorall | Alfonsi, Lu.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | De Franceschi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Romano, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Mitchell, C. N.; Department of Electric and Electronic Engineering of the University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom | en |
dc.contributor.authorall | Spalla, P.; Istituto di Fisica Applicata ‘‘Carrara’’, IFAC-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy | en |
dc.date.accessioned | 2009-05-22T10:33:52Z | en |
dc.date.available | 2009-05-22T10:33:52Z | en |
dc.date.issued | 2009 | en |
dc.identifier.uri | http://hdl.handle.net/2122/5050 | en |
dc.description.abstract | The study of amplitude scintillation on GPS radio links is usually done after detrending the time series of the transmitted power so to define scintillations as the chaotic fluctuation around a unitary value. In a sense, the choice of how to detrend the time series is part of the definition of scintillation. Here we analyse how far the continuous wavelet analysis of the detrended signal is influenced by the choice of detrending. This study is done using amplitude raw data from the GPS receivers held by INGV and the University of Bath in the Northern polar region, with a sampling time of 0.02 s. Three detrending procedures are considered: a fifth degree polynomial detrending, a high-pass filter with detrending period as twice the length of the time series considered, and a high-pass filter with detrending period determined via some statistical criterion. We show that there exists a "threshold time scale" of about half minute under which the differences between the scalograms from the signals detrended in the three ways are very small. This is not changed by applying the same detrending procedures to the segment of length reduced to one-third. Consequences in terms of scintillation definition and practical applications are given. | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier Ltd. | en |
dc.relation.ispartof | Advances in Space Research | en |
dc.relation.ispartofseries | / 143 (2009) | en |
dc.subject | Ionospheric scintillation | en |
dc.subject | Wavelet analysis | en |
dc.subject | Turbolence remote sensing | en |
dc.title | Detrend effect on the scalograms of GPS power scintillation | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 1740-1748 | en |
dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.04. Plasma Physics | en |
dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques | en |
dc.subject.INGV | 01. Atmosphere::01.02. Ionosphere::01.02.07. Scintillations | en |
dc.identifier.doi | 10.1016/j.asr.2008.01.023 | en |
dc.relation.references | Chang, T., Wu, C. Rank-ordered multifractal spectrum for intermittent fluctuations, arXiv:0712.4256v1 [astro-ph], 27 December 2007. De Franceschi, G., Romano, V., Alfonsi, L., Perrone, L., Pezzopane, M., Zolesi, B. ISACCO (Ionospheric Scintillations Arctic Campaign Coordinated Observations) project at Ny-A˚ lesund, Conference Proceedings Atmospheric Remote Sensing using Satellite Navigation Systems, Special symposium of the URSI Joint Working Group, FG, Matera, CDROM, 2003. De Franceschi, G., Alfonsi, L., Romano, V. ISACCO: an Italian project to monitor the high latitudes ionosphere by means of GPS receivers, GPS Solutions, doi:10.1007/s10291-006-0036-6, 2006. Farge, M. Wavelet transforms and their application to turbulence. Annu. Rev. Fluid Mech. 24, 395–457, 1992. Mallat, S. A Wavelet Tour of Signal Processing. Academic Press, 1999. Materassi M., Alfonsi, L., De Franceschi, G., Mitchell, C.N., Romano, V., Spalla, P., Wernik, A.W., Yordanova, E. Intermittency and ionospheric scintillations in GPS data, in: Siddiqi, A.H., Alsan, S., Rasulov, M., Og˘un, O., Aslan, Z. (Eds.), Proceedings of the International Workshop on Applications of Wavelets to Real World Problems (IWW2005), 17–18 July 2005, Istanbul (Turkey). Istanbul Commerce University Publications, Istanbul, CDROM, 2005. Materassi, M., Mitchell, C.N. Wavelet analysis of GPS amplitude scintillation: a case study. Radio Sci. 42 (1), RS1004, doi:10.1029/ 2005RS003415, 2007. Mitchell, C.N., Alfonsi, L., De Franceschi, G., Lester, M., Romano, V., Wernik, A.W. GPS TEC and scintillation measurements from the polar ionosphere during the October 2003 storm. Geophys. Res. Lett. 32 (12), L12S03, 10.1029/2004GL021644, 2005. Torrence, C., Compo, G.P. A practical guide to wavelet analysis. Bull. Am. Meteorol. Soc. 79 (1), 61–78 (Boston), 1998. Van Dierendonk, A.J., Klobuchar, J., Hua, Q. Ionospheric scintillation monitoring using commercial single frequency C/A code receivers, paper presented at Institute of Navigation GPS-93, Inst. of Navig., Arlington, VA, September 1993. Wernik, A.W. Wavelet transform of nonstationary ionospheric scintillation. Acta Geophys. Polonica 45, 237–253, 1995. Wernik, A.W. Private communication, 2005. Wernik, A.W., Alfonsi, L., Materassi, M. Scintillation modelling using insitu data. Radio Sci. 42 (1), RS1002, 10.1029/2006RS003512, 2007. | en |
dc.description.obiettivoSpecifico | 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Materassi, M. | en |
dc.contributor.author | Alfonsi, Lu. | en |
dc.contributor.author | De Franceschi, G. | en |
dc.contributor.author | Romano, V. | en |
dc.contributor.author | Mitchell, C. N. | en |
dc.contributor.author | Spalla, P. | en |
dc.contributor.department | Istituto dei Sistemi Complessi del CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Department of Electric and Electronic Engineering of the University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom | en |
dc.contributor.department | Istituto di Fisica Applicata ‘‘Carrara’’, IFAC-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
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.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | 3Department of Electronic and Electrical Engineering, University of Bath | - |
crisitem.author.dept | Istituto di Fisica Applicata «Nello Carrara» (IFAC), Firenze, Italy | - |
crisitem.author.orcid | 0000-0002-1806-9327 | - |
crisitem.author.orcid | 0000-0002-3943-6798 | - |
crisitem.author.orcid | 0000-0002-7532-4507 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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