Show simple item record

dc.contributorBradley Department of Electrical and Computer Engineeringen
dc.contributorMotorola. Paging Groupen
dc.contributorCairo University. Department of Engineering Physics and Mathematicsen
dc.contributor.authorChatzipetros, Argyrios A.en
dc.contributor.authorShaarawi, Amr M.en
dc.contributor.authorBesieris, Ioannis M.en
dc.contributor.authorAbdel-Rahman, Mohammad J.en
dc.date.accessioned2015-05-26T19:30:58Zen
dc.date.available2015-05-26T19:30:58Zen
dc.date.issued1998-05-01en
dc.identifier.citationChatzipetros, A. A., Shaarawi, A. M., Besieris, I. M., & Abdel-Rahman, M. A. (1998). Aperture synthesis of time-limited X waves and analysis of their propagation characteristics. Journal of the Acoustical Society of America, 103(5), 2287-2295. doi: 10.1121/1.422747en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52601en
dc.description.abstractThe feasibility of exciting a localized X-wave pulse from a finite aperture is addressed. Also, the possibility of using a finite-time excitation of a dynamic aperture to generate a finite-energy approximation to an X-wave pulse is explored. The analysis is carried out by using a Gaussian time window to time limit the infinite X-wave initial excitation. Huygens' construction is used to calculate the amplitude of the radiated wave field away from the finite-time source. The decay rate of the peak of the X wave is compared to that of a quasi-monochromatic signal. It is shown that the finite-time X-wave propagates to much farther distances without significant decay. Furthermore, the decay pattern of the radiated X-wave pulse is derived for a source consisting of an array of concentric annular sections. The decay behavior of the radiated pulse is similar to that of an X-wave launched from a finite-time aperture. This confirms the fact that time windowing the infinite energy X-wave excitation is a viable scheme for constructing finite apertures. A discussion of the diffraction limit of the X-wave pulse is also provided.en
dc.format.extent9 pagesen
dc.format.mimetypeapplication/pdfen
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAcoustic wave diffractionen
dc.subjectExcitation energiesen
dc.titleAperture synthesis of time-limited X waves and analysis of their propagation characteristicsen
dc.typeArticle - Refereeden
dc.contributor.departmentElectrical and Computer Engineeringen
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/103/5/10.1121/1.422747en
dc.date.accessed2015-05-12en
dc.title.serialJournal of the Acoustical Society of Americaen
dc.identifier.doihttps://doi.org/10.1121/1.422747en
dc.type.dcmitypeTexten


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record