{"id":131841,"date":"1996-01-01T00:00:00","date_gmt":"1996-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/deteccion-de-senales-sobre-ruido-no-gaussiano-mediante-la-transformada-wigner-ville\/"},"modified":"1996-01-01T00:00:00","modified_gmt":"1996-01-01T00:00:00","slug":"deteccion-de-senales-sobre-ruido-no-gaussiano-mediante-la-transformada-wigner-ville","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/deteccion-de-senales-sobre-ruido-no-gaussiano-mediante-la-transformada-wigner-ville\/","title":{"rendered":"Deteccion de se\u00f1ales sobre ruido no gaussiano mediante la transformada wigner-ville."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Rodriguez Hernandez Miguel Angel <\/strong><\/h2>\n<p>El problema general que trata esta tesis es la deteccion de se\u00f1al en ruido no gaussiano, y mas concretamente la deteccion de pulsos de envolvente gaussiana sobre ruido tipo k, mediante el uso de la transformada wigner-ville.El modelo de ruido tipo k aparece en diferentes aplicaciones. El entorno de realizacion de esta tesis es el de ensayos no destructivos mediante ultrasonidos, por lo que tanto durante su desarrollo como en las pruebas finales se han tratado de tener en cuenta los problemas que presentan este tipo de ensayos para facilitar la posterior aplicacion a un entorno real de los resultados obtenidos.  la causa fisica del problema planteado es debida a que cuando se transmite un pulso de ultrasonico, los componentes del material por el que se propaga producen una serie de reflexiones y de dispersiones que aparecen en el receptor en forma de ruido.  este ruido tiene un espectro coherente con el de la se\u00f1al transmitida, ya que su origen es la propia se\u00f1al, y ademas dependiendo del material, puede tener un caracter muy impulsional lo que dificulta altamente la deteccion de la se\u00f1al.  la herramienta para la distincion entre los registros con se\u00f1al y ruido y los registros que unicamente contienen ruido ha sido la transformada wigner-ville.  en esta tesis se ha realizado la caracterizacion de la transformada tiempo-frecuencia de los pulsos de envolvente gaussiana y del ruido tipo k. A continuacion se realizo el dise\u00f1o de dos detectores de pulsos de envolvente gaussiana sobre ruido tipo k mediante de la transformada wigner-ville, uno para puntos aislados y otro sobre el registro completo. Finalmente se aplicaron las tecnicas desarrolladas a la deteccion de microgrietas en ceramicas mediante ultrasonidos.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Deteccion de se\u00f1ales sobre ruido no gaussiano mediante la transformada wigner-ville.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Deteccion de se\u00f1ales sobre ruido no gaussiano mediante la transformada wigner-ville. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Rodriguez Hernandez Miguel Angel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1996<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Lu\u00eds Vergara Dom\u00ednguez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Reyes Davo Elias De Los <\/li>\n<li>Francisco Javier Casaj\u00fas De Quir\u00f3s (vocal)<\/li>\n<li>Miguel Angel Lagunas Hern\u00e1ndez (vocal)<\/li>\n<li>Luis Gomez-ullate Alvear (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Rodriguez Hernandez Miguel Angel El problema general que trata esta tesis es la deteccion de se\u00f1al en [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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