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dc.contributor.authorLokajíček, Tomáš
dc.contributor.authorKlíma, Karel
dc.date.accessioned2007-12-19T07:03:43Z
dc.date.available2007-12-19T07:03:43Z
dc.date.issued2007
dc.identifier.citationSborník vědeckých prací Vysoké školy báňské - Technické univerzity Ostrava. Řada stavební. 2007, roč. 7, č. 2, s. 175-182 : il.en
dc.identifier.issn1213-1962en
dc.identifier.urihttp://hdl.handle.net/10084/64536
dc.description.abstractOne of the fundamental problems in non-destructive testing and geophysics is the precise determination of the first arrival of acoustic emission (AE) signals (or seismic signals) recorded by multi-channel systems. The knowledge of this time is very important, mainly in the case of automatic localization of individual AE events. Several approaches are routinely used in practice as crossing of the threshold level, analysis of the STA/LTA (short-time average/long-time average), etc. In our contribution, an approach based on high-order statistics (HOS) that is able to carry out precise arrival time determination without human intervention is presented. The approach was tested using real AE data recorded by 8 channel recording system. This simple, accurate and quite fast method is predetermined to be used in automatic processing of transient waveform data from acoustic emission, seismic signals, ultrasonic sounding, etc.
dc.language.isoenen
dc.publisherVysoká škola báňská - Technická univerzita Ostravaen
dc.relation.ispartofseriesSborník vědeckých prací Vysoké školy báňské - Technické univerzity Ostrava. Řada stavebníen
dc.rights© Vysoká škola báňská - Technická univerzita Ostravacs
dc.subjecthigh-order statistics
dc.subjectacoustic emission
dc.subjectfirst arrival identification
dc.titleStanovení času příchodu seismických/ultrazvukových signálů pomocí statistických momentů vyšších řádůen
dc.title.alternativeDetermination of first arrival time of seismic/ultrasonic signals by means of high order statistic approachen
dc.typearticleen
dc.rights.accessopenAccess
dc.type.versionpublishedVersioncs
dc.type.statusPeer-reviewedcs


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