Browsing by Subject "Global Positioning System"

Now showing items 21-40 of 348

  • A method for scintillation characterization using geodetic receivers operating at 1 Hz 

    Juan Zornoza, José Miguel; Aragón Ángel, Maria Angeles; Sanz Subirana, Jaume; González Casado, Guillermo; Rovira Garcia, Adrià (2017-05-08)
    Article
    Open Access
    Ionospheric scintillation produces strong disruptive effects on global navigation satellite system (GNSS) signals, ranging from degrading performances to rendering these signals useless for accurate navigation. The current ...

  • A methodology to assess ionospheric models for GNSS 

    Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ibáñez Segura, Deimos (2015)
    Conference lecture
    Restricted access - publisher's policy

  • An airborne GNSS-R field experiment over a vineyard for soil moisture estimation and monitoring 

    Alonso Arroyo, Alberto; Camps Carmona, Adriano José; Sanchez, Nilda; Pablos Hernández, Miriam; González Zamora, Ángel; Martinez Fernandez, Jose; Vall-Llossera Ferran, Mercedes Magdalena; Pascual, D. (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference lecture
    Restricted access - publisher's policy
    The Light Airborne Reflectometer for GNSS-R Observations (LARGO) is an airborne instrument designed for measuring the coherent reflectivity from different soils. In this work, an improved version of LARGO has been used in ...

  • Anàlisi del rendiment i operativitat d'un sistema de navegació GPS/rasant suportat amb un giròscop i un odòmetre 

    Orozco García, Margarita; Ortega Moya, Sergio (Universitat Politècnica de Catalunya, 2000-09-12)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision

  • An alternative wearable tracking system based on a low-power wide-area network 

    Fernández García, Raúl; Gil Galí, Ignacio (2017-03-14)
    Article
    Open Access
    This work presents an alternative wearable tracking system based on a low-power wide area network. A complete GPS receiver was integrated with a textile substrate, and the latitude and longitude coordinates were sent to ...

  • Analysis of Assisted GPS in LTE-Advanced networks and its applications to traditional and VTL based software receivers: Part II 

    Figueroa Naharro, Marta; Torné Sanjosé, Albert (Universitat Politècnica de Catalunya, 2013-05-30)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] The performance of GPS, and all GNSS, degrades significantly in urban canyons and in indoor environments. There has been significant research in order to enhance the performance of a GPS receiver in such challenging ...

  • Analysis of GNSS-R delay and doppler tracking errors 

    Hyuk, Park; Camps Carmona, Adriano José; Valencia Domènech, Enric; Carreño Luengo, Hugo; Martín Alemany, Francisco; Alonso Arroyo, Alberto; Pascual Biosca, Daniel (2012)
    Conference report
    Restricted access - publisher's policy
    The compensation of the delay and Doppler errors using tracking is important to accurately estimate the sea height in spaceborne GNSS-R. This work presents the impacts of the tracking residual errors on the GNSS-R observables, ...

  • Analysis of spaceborne GNSS-R delay-doppler tracking 

    Hyuk, Park; Pascual Biosca, Daniel; Camps Carmona, Adriano José; Martínez Mindeguía, Francisco; Alonso Arroyo, Alberto; Carreño Luengo, Hugo (2014-05-01)
    Article
    Restricted access - publisher's policy
    For spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R), the delay and Doppler frequency conditions dynamically change, so the compensation of the delay and Doppler errors using tracking is important to ...

  • A new approach to gross error detection for GPS networks 

    Dalfó Simó, Cristina; Fiol Mora, Miquel Àngel (2019-05-29)
    Article
    Open Access
    We present a new matrix-based approach to detect and correct gross errors in GPS geodetic control networks. The study is carried out by introducing a new matrix, whose entries are powers of a (real or complex) variable, ...

  • An Experimental Performance Evaluation of Innovations Sequence-based INS Monitor against GNSS Spoofing 

    Martinez Jimenez, Pau (Universitat Politècnica de Catalunya, 2018)
    Master thesis
    Open Access
    Covenantee:  Illinois Institute of Technology

  • A numerical simulator to evaluate the electromagnetic bias in GNSS-R altimetry 

    Ghavidel, Ali; Schiavulli, Domenico; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference lecture
    Restricted access - publisher's policy
    This paper presents the computed electromagnetic (EM) bias predicted for GNSS-R altimetry systems. First, a synthetic time-evolving sea surface is generated satisfying an ocean surface height spectrum. Then, a direct GNSS ...

  • Aplicació Android de suport i ajuda a la gent gran 

    Soler Subirà, Josep Maria (Universitat Politècnica de Catalunya, 2015-06)
    Bachelor thesis
    Open Access
    The Information and Communication Technology (ICT) group elements and techniques used in the processing and transmission of information, mainly computer, internet and telecommunications. Today people are increasingly ...

  • Aplicació Android gravadora de recorreguts de pràctiques i exàmens de conducció 

    Rebolleda Mir, David (Universitat Politècnica de Catalunya, 2016)
    Master thesis (pre-Bologna period)
    Open Access
    The great evolution of technology in the field of mobile phones has become accessible to the general public, nowadays almost everyone has one of these devices. They are used day-to-day for a wide variety of uses depending ...

  • Aplicación de gestión y seguimiento via GPS sobre dispositivo móvil y plataforma Android 

    Martínez Calleja, Héctor; Moreno Postigo, Gabriel (Universitat Politècnica de Catalunya, 2011-06-15)
    Master thesis (pre-Bologna period)
    Open Access
    Aquest document conté el disseny complet del software d'una aplicació per a un dispositiu mòbil amb sistema operatiu Android, desenvolupat per a la titulació d'Enginyeria Tècnica Industrial, especialitat d'Electrònica ...

  • Aplicación de técnicas GPS para la captura de datos con soporte cartográfico preestablecido 

    Valverde Aguilera, Pedro José (Universitat Politècnica de Catalunya, 2004)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Este proyecto surge de la necesidad que hoy día presentan los diferentes organismos de los municipios de tener registrados datos que ellos gestionan en potentes bases de datos, con un soporte cartográfico georeferenciado. ...

  • Aplicaciones GPS en el entorno de los yacimientos arqueológicos de Atapuerca 

    Pérez Ramos, Alberto; Cuadras Crespo, Elisabet (Universitat Politècnica de Catalunya, 2002)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    El siguiente proyecto se llevó a cabo en la Sierra de Atapuerca (Burgos). Debido a la importancia de los yacimientos arqueológicos que en ella se encuentran se planteó la necesidad de la implantación de una red que permitiera ...

  • Aplicació per a càlcul de xarxes topogràfiques per a plataforma Android 

    Riba Pi, Edgar (Universitat Politècnica de Catalunya, 2012-07)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    En els darrers anys hi ha moltes empreses que estan integrant totes les funcions de comunicació, processament de dades, trucades telefòniques, execució d'aplicacions bàsiques en un únic aparell que a la vegada pugui estar ...

  • Aplicació per a dispositius mòbils en "Android": Geoshows 

    Díaz de Ugarte, Lluis (Universitat Politècnica de Catalunya, 2011)
    Master thesis (pre-Bologna period)
    Open Access
    L’objectiu del projecte és crear una aplicació sota el sistema operatiu Android per a dispositius mòbils que permeti l’accés i escriptura a una base de dades, així com la utilització de eines que ens brinden les noves ...

  • A radio-frequency interference detector for GNSS navigation and GNSS-reflectometry applications 

    Querol Borràs, Jorge; Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    Radio-Frequency Interference (RFI) is a growing problem for applications based on the Global Navigation Satellite Systems (GNSS), including Earth observation using GNSS - Reflectometry (GNSS-R). Nowadays, many efforts are ...

  • A real-time world-wide ionospheric model for single and multi-frequency precise navigation 

    Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (The Institute of Navigation, 2014)
    Conference lecture
    Restricted access - publisher's policy
    The ionosphere plays an important role in satellite-based navigation, either in standard navigation, with single frequency mass-market receivers, or in precise navigation, with dual frequency receivers. In this work, the ...