Download or read book Methodes actives spatio temporelles large bande techniques et performances application en sonar written by Philippe Graffouliere and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book METHODES ACTIVES SPATIO TEMPORELLES LARGE BANDE TECHNIQUES ET PERFORMANCES APPLICATION A DES SIGNAUX SONAR ET A DES SIGNAUX OBTENUS EN TRANSMISSION written by PHILIPPE.. GRAFFOULIERE and published by . This book was released on 1997 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: METHODES ACTIVES SPATIO-TEMPORELLES LARGE BANDE : TECHNIQUES ET PERFORMANCES. APPLICATION EN SONAR. CERTAINS PROCEDES D'ESTIMATION ET DE DETECTION SONT DITS ACTIFS, LORSQUE LA PREMIERE ETAPE CONSISTE EN L'EMISSION D'UN SIGNAL CONNU. NOUS NOUS SOMMES INTERESSES AUX METHODES DE TRAITEMENT DES SIGNAUX ISSUS DE CE TYPE D'EXPERIMENTATION, COMME LES SIGNAUX DE SONAR ACTIF OU DE TOMOGRAPHIE OCEANIQUE, EN S'APPUYANT SYSTEMATIQUEMENT SUR UNE HYPOTHESE DE BANDE LARGE. LA PREMIERE PARTIE EST CONSACREE AU TRAITEMENT D'ANTENNE ACTIF, ON Y RAPPELLE LES ESTIMATEURS OPTIMAUX, LES BORNES DE CRAMER-RAO ASSOCIEES, DANS DIVERSES CONFIGURATIONS D'ANTENNE ET DE SIGNAUX. LE TRAITEMENT OPTIMAL Y EST COMPARE A UNE METHODE RAPIDE INTERFEROMETRIQUE. LA DEUXIEME PARTIE EST CONSACREE A L'ESTIMATION RETARD DOPPLER, ON Y RAPPELLE LES ESTIMATEURS OPTIMAUX, LES BORNES DE CRAMER-RAO ASSOCIEES, EN INSISTANT SUR LES NOTIONS DE DECOUPLAGE DES ESTIMATEURS. LES RESULTATS SONT DISCUTES EN FONCTION DU DECOUPLAGE, DEPENDANT DE LA NATURE DES SIGNAUX. LA TROISIEME PARTIE EST CONSACREE A L'ESTIMATION ACTIVE SPATIO-TEMPORELLE HAUTE RESOLUTION. L'UTILISATION DE METHODES DE MAXIMUM DE VRAISEMBLANCE DANS CE BUT A ETE MONTREE POSSIBLE, MOYENNANT QUELQUES AMELIORATIONS APPORTEES. UNE EXTENSION A L'ESTIMATION HR RETARD-DOPPLER EST RAPIDEMENT DEVELOPPEE. LA QUATRIEME PARTIE EST CONSACREE A L'EVALUATION DE LA PERTE DE PERFORMANCES QUAND CES METHODES NE SONT PLUS OPTIMALES : SI LE BRUIT EST COLORE, L'ANTENNE DEFORMEE, LE SIGNAL EMIS DISTORDU... LA METHODE UTILISEE POUR CE FAIRE EST LE CALCUL DE PERTURBATIONS. DE NOMBREUSES SIMULATIONS CORROBORENT LES RESULTATS. ENFIN, LES METHODES HR SONT TESTEES AU MOYEN DE DEUX EXPERIMENTATIONS. LES RESULTATS OBTENUS SONT SATISFAISANTS, ET MONTRENT LA POSSIBILITE D'APPLIQUER CES METHODES AVEC SUCCES.
Download or read book Underwater Acoustic Data Processing written by Y. T. Chan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the papers that were accepted for presentation at the 1988 NATO Advanced Study Institute on Underwater Acoustic Data Processing, held at the Royal Military College of Canada from 18 to 29 July, 1988. Approximately 110 participants from various NATO countries were in attendance during this two week period. Their research interests range from underwater acoustics to signal processing and computer science; some are renowned scientists and some are recent Ph.D. graduates. The purpose of the ASI was to provide an authoritative summing up of the various research activities related to sonar technology. The exposition on each subject began with one or two tutorials prepared by invited lecturers, followed by research papers which provided indications of the state of development in that specific area. I have broadly classified the papers into three sections under the titles of I. Propagation and Noise, II. Signal Processing and III. Post Processing. The reader will find in Section I papers on low frequency acoustic sources and effects of the medium on underwater acoustic propagation. Problems such as coherence loss due to boundary interaction, wavefront distortion and multipath transmission were addressed. Besides the medium, corrupting noise sources also have a strong influence on the performance of a sonar system and several researchers described methods of modeling these sources.
Download or read book Modelling the Wireless Propagation Channel written by Fernando P¿rez Font¿n and published by John Wiley & Sons. This book was released on 2008-09-15 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical tool for propagation channel modeling with MATLAB® simulations. Many books on wireless propagation channel provide a highly theoretical coverage, which for some interested readers, may be difficult to follow. This book takes a very practical approach by introducing the theory in each chapter first, and then carrying out simulations showing how exactly put the theory into practice. The resulting plots are analyzed and commented for clarity, and conclusions are drawn and explained from the obtained results. Key features include: A unique approach to propagation channel modeling with accompanying MATLAB® simulations to demonstrate the theory in practice Contains step by step commentary and analysis of the obtained simulation results in order to provide a comprehensive and structured learning tool Covers a wide range of topics including shadowing effects, coverage and interference, Multipath Narrowband channel, Multipath Wideband channel, propagation in micro and pico-cells, the land mobile satellite (LMS) channel, the directional Multipath channel and MIMO and propagation effects in fixed radio links (terrestrial and satellite) The book comes with an accompanying website that contains the MATLAB® simulations and allows readers to try them out themselves Well suited for lab-use, as reference and as a self-learning tool both for advanced students and professionals Modeling the Wireless Propagation Channel: A simulation approach with MATLAB® will be best suited for postgraduate (Masters and PhD) students and practicing engineers in telecommunications and electrical engineering fields, who are seeking to familiarise themselves with the topic without too many formulas. The book will also be of interest to network engineers, system engineers and researchers
Download or read book Earth Observation for Biodiversity Monitoring written by Cristina Secades and published by . This book was released on 2014 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 2020 17th European Radar Conference EuRAD written by IEEE Staff and published by . This book was released on 2021-01-10 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: radar
Download or read book Limitations Neurologiques Des Op rations A riennes written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium and published by . This book was released on 1996 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ambient Noise in the Sea written by Robert J. Urick and published by . This book was released on 1984 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foliage Penetration Radar written by Mark E. Davis and published by IET. This book was released on 2011-06-30 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers all aspects of foliage penetration (FOPEN) radar for both airborne military systems and earth resource mapping. It is the first book to be published on the subject.
Download or read book Principles of Radar and Sonar Signal Processing written by Chevalier François Le and published by Artech House. This book was released on 2002 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecoacoustics written by Almo Farina and published by John Wiley & Sons. This book was released on 2017-07-24 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sounds produced by geophonic, biophonic and technophonic sources are relevant to the function of natural and human modified ecosystems. Passive recording is one of the most non-invasive technologies as its use avoids human intrusion during acoustic surveys and facilitates the accumulation of huge amounts of acoustical data. For the first time, this book collates and reviews the science behind ecoaucostics; illustrating the principles, methods and applications of this exciting new field. Topics covered in this comprehensive volume include; the assessment of biodiversity based on sounds emanating from a variety of environments the best technologies and methods necessary to investigate environmental sounds implications for climate change and urban systems the relationship between landscape ecology and ecoacoustics the conservation of soundscapes and the social value of ecoacoustics areas of potential future research. An invaluable resource for scholars, researchers and students, Ecoacoustics: The Ecological Role of Sounds provides an unrivalled set of ideas, tools and references based on the current state of the field.
Download or read book European Seagrasses written by Jens Borum and published by . This book was released on 2004 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the report project is to define the habitat requirements of seagrasses in the European coasts, the present threats to the sustainability of the ecosystem they form, and their resilience to disturbance in order to strengthen our forecast capacity and formulate cost-effective monitoring plans and management strategies.
Download or read book Fundamentals of Multisite Radar Systems written by V S Chernyak and published by Routledge. This book was released on 2018-05-02 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an original and comprehensive monograph on the increasingly important field of Multistatic Radar Systems. The material covered includes target detection, coordinate and trajectory parameter estimation, optimum and suboptimum detectors and external interferences. The practical problems faced by those working with radar systems are considered - most algorithms are presented in a form allowing direct use in engineering practice, and many of the results can be immediately applied to information systems containing different types of sensors, not only radars. This book is the revised international edition of Chernyak's renowned Russian textbook.
Download or read book Audio Effectiveness in Aviation written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Aerospace Medical Panel. Symposium and published by . This book was released on 1997 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection Estimation and Modulation Theory Part II written by Harry L. Van Trees and published by Wiley-Interscience. This book was released on 2003-01-10 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Well-known authority, Dr. Van Trees updates array signal processing for today's technology * This is the most up-to-date and thorough treatment of the subject available * Written in the same accessible style as Van Tree's earlier classics, this completely new work covers all modern applications of array signal processing, from biomedicine to wireless communications.
Download or read book Low Frequency Scattering written by George Dassios and published by Oxford University Press. This book was released on 2000 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scattering theory deals with the interactions of waves with obstacles in their path, and low frequency scattering occurs when the obstacles involved are very small. This book gives an overview of the subject for graduates and researchers, for the first time unifying the theories covering acoustic, electromagnetic and elastic waves.
Download or read book Integrated Water Management written by P. Meire and published by Springer Science & Business Media. This book was released on 2007-11-07 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrated Water Management (IWM) deals with the planning and management of water resources by integrating the different issues involved, including ecological, economic, technical legislative, and transboundary. This book offers a general framework for IWM. It includes both the different environmental problems that affect the very different ecosystems and the main methodologies able to face the problem of IWM.
