Now showing items 1-20 of 238

    A geodetic approach to precise, accurate, available and reliable navigation 

    Parés Calaf, M. Eulàlia (Date of defense: 2021-01-14)

    The determination of a body position, velocity and attitude is the purpose of the navigation techniques. The most extended navigation systems (INS/GNSS), as any other HW and SW system, provide precise and accurate enough ...

    A network approach for strapdown inertial kinematic gravimetry 

    Termens Perarnau, Maria Assumpció (Date of defense: 2014-03-07)

    Compared to the conventional ground measurement of gravity, airborne gravimetry is more efficient and cost-effective. Especially, the combination of GPS and INS is known to show very good performances recovering the gravity ...

    A systematic approach to airborne sensor orientation and calibration: method and models 

    Blázquez González, Marta (Date of defense: 2012-07-03)

    Avui dia, s'estima que el mercat de la geom atica mou pels volts de 30 bilions d'euros. Al darrera del creixement d'aquest mercat hi trobem noves tecnologies,projectes i aplicacions, com per exemple, \Global Positioning ...

    Algorithms and Methods for Robust Geodetic kinematic Positioning 

    Talaya López, Julià (Date of defense: 2003-06-27)

    El sistema NAVSTAR/GPS ha desenvolupat un paper molt important en les tècniques de posicionament cinemàtic geodèsiques, especialment en la determinació de la trajectòries per a la orientació de sensors aerotransportats ...

    Algunes aplicacions de les "Wavelets" al procés de dades en astronomia i teledetecció. 

    Otazu Porter, Xavier (Date of defense: 2001-11-08)

    L'objectiu d'aquesta tesi és l'estudi de l'aplicació de les funcions matemàtiques anomenades "wavelet" en diversos camps del procés de dades en Astronomia i Teledetecció. En el camp de l'Astronomia, s'ha estudiat la seva ...

    Analysis and modelling of the solar energetic particle radiation environment in the inner heliosphere in preparation for Solar Orbiter 

    Pacheco Mateo, Daniel (Date of defense: 2019-04-30)

    The Sun is the main source of all kind of solar energetic particles in the Solar System, electrons, protons and ions with energies from few keV to several GeV. These particles are released from the solar corona and spread ...

    Analysis of high-precision spectroscopic and photometric data for planet and stellar characterisation 

    Baroch López, David (Date of defense: 2021-07-27)

    La detecció de la primera estrella binària més de 200 anys enrere va representar l'inici de tot un nou camp de l'astrofísica dedicat a l'estudi de l'evolució i les interaccions d'aquests sistemes, fent servir com a principal ...

    Analysis of some classical and quantum aspects of black holes 

    Gabbanelli, Luciano (Date of defense: 2019-11-04)

    For ninety years we have known that our universe is in expansion. Cosmological data favor an unknown form of intrinsic and fundamental uniform energy contributing approximately 68% of the total energy budget in the current ...

    Analysis of the spiral structure in disk galaxies using the FFT transform 

    Barbera Escoi, Carlos (Date of defense: 2018-05-18)

    Aquesta tesi vol proporcionar mètodes matemàtics per a aprofundir en l’estudi de l’estructura espiral present en el disc de les galàxies espirals. Aproximadament, dos terços de les galàxies són galàxies espirals, d’aquí ...

    Analytic derivation of non-linear dark matter clustering from the filtering of the primordial density field 

    Juan Rovira, Enric (Date of defense: 2016-02-05)

    In this Thesis, we show how the properties of dark matter halos can be directly derived from the proper filtering of the primordial density field through the use of the CUSP formalism (ConflUent System of Peak trajectories). ...

    Análisis espacial colectivo como soporte a las decisiones espaciales : el sistema geoespacial de inteligencia colectiva = Collective spatial analysis as spatial decision-making support : the geospatial system of collective intelligence 

    Castillo Rosas, Juan Daniel (Date of defense: 2016-02-25)

    The spatial decision-making process for the purpose of planning, policies, plans, or territorial programs, is intimately tied to the concept of location in the respective geographical space, mainly because many aspects ...

    Aplicación de imágenes de satélite SAR,en los estudios de contaminación marina y de dinámica de las aguas en el mediterráneo noroccidental 

    Platonov, Alexei (Date of defense: 2002-07-19)

    This thesis presents diverse theoretical and practical applications of the ERS 1/2 and RADARSAT satellite images of the Synthetic Aperture Radar SAR sensor (near 330 images in the Northwest Mediterranean NWM and 980 in ...

    Aplication of Interferometric Radiometry to Earth Observation 

    Camps Carmona, Adriano José (Date of defense: 1996-11-22)

    La tesis contiene en primer lugar un estudio de las técnicas de interferometria radiometrica, con énfasis en las causas de error y su impacto en las características del sensor. A continuación se proponen y comparan varias ...

    Application of dynamical system methods to galactic dynamics : from warps to double bars 

    Sánchez Martín, Patricia (Date of defense: 2015-06-29)

    Most galaxies have a warped shape when they are seen from an edge-on point of view. In this work we apply dynamical system methods to find an explanation of this phenomenon that agrees with its abundance among galaxies, ...

    Aspectes clàssics i quàntics de forats negres en diverses dimensions 

    Figueras Barnera, Pau (Date of defense: 2007-09-21)

    L'objectiu del projecte era el d'estudiar diversos aspectes dels forats negres en dimensions més altes que quatre. Concretament, volíem estudiar els anells negres en cinc dimensions amb l'objectiu de generalitzar les ...

    Astrophysical studies on open clusters: NGC 1807, NGC 1817, NGC 2548 and NGC 2682 

    Balaguer Núñez, María Dolores (Date of defense: 2006-01-16)

    The aim of this thesis, devised as a collaboration between Spain and China, is the characterization of the open clusters NGC 1807, NGC 1817, NGC 2548 and NGC 2682, as well as the analysis of the results in the general ...

    Atlas climático de irradiación solar a partir de imágenes del satélite NOAA. Aplicación a la península Ibérica 

    Vera Mella, Nelson (Date of defense: 2005-09-22)

    The study of solar radiation is a key process for the exploitation of solar energy systems. In most cases, however, the availability of information is insufficient and not up-to-date. In addition, the interpolation of ...

    Atmospheric Tomography Using Satellite Radio Signals 

    Flores Jiménez, Alejandro (Date of defense: 2000-02-04)

    Los sistemas de posicionamiento global GNSS (GPS y GLONASS) se han convertido en una herramienta básica para obtener medidas geodésicas de la Tierra y en una fuente de datos para el estudio atmosférico. Proporcionan cobertura ...

    Automatic source detection in astronomical images 

    Masias Moyset, Marc (Date of defense: 2014-07-28)

    The use of automatic algorithms to detect astronomical sources (stars, galaxies, gas, dust or cosmic rays) becomes of great importance because of the increasing amount of astronomical images and the inefficiency and ...

    Bayes ian data analys i s for l i sa pathfinder. Techniques applied to system identification experiments 

    Karnesis, Nikolaos (Date of defense: 2015-01-13)

    Les ones gravitatòries són una predicció de la teoria de la Relativitat General d’Einstein, la detecció i anàlisi de les quals obrirà una nova àrea en el nostre coneixement de l’Univers. En efecte, aquestes ones porten ...