{"id":570,"date":"2014-09-21T13:26:33","date_gmt":"2014-09-21T12:26:33","guid":{"rendered":"https:\/\/asal.dz\/?p=570"},"modified":"2018-12-23T14:10:01","modified_gmt":"2018-12-23T13:10:01","slug":"soutenance-de-these-de-doctorat-8","status":"publish","type":"post","link":"https:\/\/asal.dz\/?p=570","title":{"rendered":"Soutenance de th\u00e8se de doctorat"},"content":{"rendered":"\n\n\n\n
\n

Une th\u00e8se de Doctorat a \u00e9t\u00e9 soutenue par Mr TAIBI Habib, chercheur au Centre des Techniques Spatiales d\u2019Arzew (CTS \/ ASAL), le mardi 16 Septembre\u00a0 2014 \u00e0 l\u2019Universit\u00e9 des Sciences et de la Technologie Mohamed Boudiaf d\u2019Oran\u00a0dans la fili\u00e8re \u00ab\u00a0traitement du signal\u00a0\u00bb.<\/p>\n

Cette th\u00e8se, dans le domaine de la G\u00e9od\u00e9sie Spatiale intitul\u00e9e : Analyse des R\u00e9sidus d\u2019Orbite de Satellites de Positionnement par la Transform\u00e9e en Ondelettes<\/em><\/strong>,<\/em> a \u00e9t\u00e9 dirig\u00e9e par Mr KAHLOUCHE\u00a0 Salem, \u00a0<\/strong>Directeur de recherche au Centre des Technique Spatiales et a \u00e9t\u00e9 soutenue devant le jury compos\u00e9 de:<\/p>\n

– M. M. F BELBACHIR, Professeur \u00e0 l\u2019USTMBO, Pr\u00e9sident\u00a0;
\n– M. N. BOUGHANEMI, Professeur \u00e0 l\u2019USTMBO, Membre\u00a0;
\n– M. Z. DEROUICHE, Professeur \u00e0 l\u2019USTMBO, Membre\u00a0;
\n– M. M. A. Si MOHAMED, Directeur de recherche \u00e0 ASAL, Membre.<\/p>\n

\n

<\/p>\n

R\u00e9sum\u00e9 de th\u00e8se<\/strong>\u00a0:<\/p>\n

Une m\u00e9thodologie d\u2019analyse des s\u00e9ries temporelles issues des diff\u00e9rentes techniques de g\u00e9od\u00e9sie\u00a0 spatiale (positions de station DORIS, niveau moyen de la mer \u00e0 l\u2019\u00e9chelle globale et r\u00e9gionale) a \u00e9t\u00e9 men\u00e9e \u00e0 travers cette th\u00e8se.<\/p>\n

Cette recherche a port\u00e9, dans un premier temps, sur une analyse comparative des s\u00e9ries temporelles de positions de six stations DORIS, issues de trois centres internationaux d\u2019analyse (Institute of Astronomy, Russian Academy of Sciences, Russia \/INA, Institut G\u00e9ographique National, IGN \/France et CNES\/ CLS, France \/LCA), en utilisant la technique du spectre d\u2019ondelette pour mettre en \u00e9vidence la corr\u00e9lation entre les diff\u00e9rents centres d\u2019analyse. Les r\u00e9sultats obtenus confirment la forte corr\u00e9lation entre les solutions des deux centres d\u2019analyse INA et IGN.<\/p>\n

Pour mettre en \u00e9vidence l\u2019efficacit\u00e9 de la technique utilis\u00e9e, une application sur les donn\u00e9es issues de l\u2019altim\u00e9trie spatiale a \u00e9t\u00e9 \u00e9galement men\u00e9e et les r\u00e9sultats obtenus ont montr\u00e9 la forte corr\u00e9lation entre les variations du niveau moyen global et les fluctuations du ph\u00e9nom\u00e8ne ENSO (El Ni\u00f1o\u00a0 Southern Oscillation<\/em>) ainsi que leurs phases relatives dans l’espace temps-fr\u00e9quence.<\/p>\n

Comme technique similaire \u00e0 l\u2019analyse en ondelettes, la technique SSA (Singular Spectrum Analysis<\/em>) a \u00e9t\u00e9 appliqu\u00e9e sur les s\u00e9ries temporelles du niveau moyen de diff\u00e9rentes mers et oc\u00e9ans. Les tendances extraites confirment bien la hausse du niveau moyen des mers et oc\u00e9ans.<\/p>\n

Mots cl\u00e9s\u00a0:<\/u><\/strong> s\u00e9ries temporelles, positions de stations, niveau de la mer, ondelette, corr\u00e9lation, SSA.<\/p>\n<\/td>\n<\/tr>\n

<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Une th\u00e8se de Doctorat a \u00e9t\u00e9 soutenue par Mr TAIBI Habib, chercheur au Centre des Techniques Spatiales d\u2019Arzew (CTS \/ ASAL), le mardi 16 Septembre\u00a0 2014 \u00e0 l\u2019Universit\u00e9 des Sciences et de la Technologie Mohamed Boudiaf d\u2019Oran\u00a0dans la fili\u00e8re \u00ab\u00a0traitement du signal\u00a0\u00bb. Cette th\u00e8se, dans le domaine de la G\u00e9od\u00e9sie Spatiale intitul\u00e9e : Analyse des […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","footnotes":""},"categories":[3],"tags":[],"class_list":["post-570","post","type-post","status-publish","format-standard","hentry","category-actualites"],"_links":{"self":[{"href":"https:\/\/asal.dz\/index.php?rest_route=\/wp\/v2\/posts\/570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/asal.dz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/asal.dz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/asal.dz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/asal.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=570"}],"version-history":[{"count":0,"href":"https:\/\/asal.dz\/index.php?rest_route=\/wp\/v2\/posts\/570\/revisions"}],"wp:attachment":[{"href":"https:\/\/asal.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/asal.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=570"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/asal.dz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}