About: New Possibilities to Increase Sensitivity of the Ultrasound Nonlinear Modulation Methods

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://vavtest.unob.cz/registr
Description	This paper presents comparison of two basic methods of nonlinear modulation ultrasound spectroscopy and it asks new possibilities for rising of sensitivity. Especially a necessary time for the exciting and sensing signals are compared and further it discusses possibilities of lowering of a dynamic range of the measured signals by using of analog linear prefiltration for suppressing of excitation signals. The second part discusses possibility of using of the pulse exciting mode for these methods. First, the excitation by phase coupled pulse signals is derived for obtaining of result long lime signal without waste of its useful energy. Nevertheless the analog prefiltration cannot be used for suppression of excitation signals in this case. Therefore the new variant of mixing method is derived, where the result signal has the relatively high difference frequency and LC filters with sufficient attenuation of exciting signals can be used. This paper presents comparison of two basic methods of nonlinear modulation ultrasound spectroscopy and it asks new possibilities for rising of sensitivity. Especially a necessary time for the exciting and sensing signals are compared and further it discusses possibilities of lowering of a dynamic range of the measured signals by using of analog linear prefiltration for suppressing of excitation signals. The second part discusses possibility of using of the pulse exciting mode for these methods. First, the excitation by phase coupled pulse signals is derived for obtaining of result long lime signal without waste of its useful energy. Nevertheless the analog prefiltration cannot be used for suppression of excitation signals in this case. Therefore the new variant of mixing method is derived, where the result signal has the relatively high difference frequency and LC filters with sufficient attenuation of exciting signals can be used. (en)
Title	New Possibilities to Increase Sensitivity of the Ultrasound Nonlinear Modulation Methods New Possibilities to Increase Sensitivity of the Ultrasound Nonlinear Modulation Methods (en)
skos:prefLabel	New Possibilities to Increase Sensitivity of the Ultrasound Nonlinear Modulation Methods New Possibilities to Increase Sensitivity of the Ultrasound Nonlinear Modulation Methods (en)
skos:notation	RIV/60162694:G43__/07:00398722!RIV12-MO0-G43_____
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MO0FVT0000403)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Hájek, Karel
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ministerstvo obrany / Univerzita obrany - Fakulta vojenských technologií Brno
http://linked.open...dnocenehoVysledku	437197
http://linked.open...ai/riv/idVysledku	RIV/60162694:G43__/07:00398722
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nonlinear; ultrasound; ndt (en)
http://linked.open.../riv/klicoveSlovo	ultrasound nonlinear ndt
http://linked.open...ontrolniKodProRIV	[5C87798A9AA2]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Brno
http://linked.open...i/riv/nazevZdroje	EUROPEAN NDT DAYS IN PRAGUE 2007: NDT IN PROGRESS, PROCEEDINGS
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2007
http://linked.open...iv/tvurceVysledku	Hájek, Karel Šikula, Josef
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2007-01-01 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Development, integration, administration and security of communication and information systems (C4I2) in NATO environment
number of pages	7 (xsd:int)
http://purl.org/ne...btex#hasPublisher	ČNDT
https://schema.org/isbn	978-80-214-3505-6
http://localhost/t...ganizacniJednotka	G43

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