Now showing items 21-40 of 65

    • Estudio sobre la influencia de los modelos troposféricos en observaciones GPS 

      Gallart Munich, Xavier (Universitat Politècnica de Catalunya, 2014-07)
      Master thesis (pre-Bologna period)
      Open Access
      En este proyecto se hace una breve exposición de los principios básicos del funcionamiento de los sistemas GNSS, los operativos y los que están en desarrollo, y un repaso de las principales fuentes de error. Una de las ...
    • EVA: GPS-based extended velocity and acceleration determination 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Aragón Ángel, María Ángeles (2010-12-01)
      Article
      Restricted access - publisher's policy
      In this work, a new GPS carrier phase-based velocity and acceleration determination method is presented that extends the effective range of previous techniques. The method is named ‘EVA’, and may find applications in ...
    • Experimental proof of concept of an SDN-based traffic engineering solution for hybrid satellite-terrestrial mobile backhauling 

      Mendoza Montoya, Jesús Fabián; Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol (2019-11-30)
      Article
      Open Access
      Satellite networks are expected to be an integral part of 5G service deployment. One compelling use case is mobile backhauling, where the exploitation of a satellite component can improve the reach, robustness, and economics ...
    • gLAB upgrade with EGNOS data processing 

      Ibáñez Segura, Deimos (Universitat Politècnica de Catalunya, 2016-06)
      Master thesis (pre-Bologna period)
      Open Access
      gLAB is a free open-source software to process GNSS data. The first release of this software package allows full processing capability of GPS data, and partial handling of Galileo and GLONASS data. EGNOS is the european ...
    • Global maritime surveillance and oceanic vessel traffic services: towards the e-navigation 

      Martínez de Osés, Francesc Xavier; Uyà Juncadella, Àfrica (2021-01-07)
      Article
      Restricted access - publisher's policy
      Vessel traffic services (VTS) operators can control the movements of ships in localcoastal areas, and also have the technological ability to track vessels internationally,since all merchant vessels are currently equipped ...
    • GNSS Approaches availability study at Lleida Airport 

      Sole Gaset, Marc (Universitat Politècnica de Catalunya, 2011-03-16)
      Bachelor thesis
      Open Access
      owadays, the Instrumental Landing System (ILS) allows the civil aviation to do precision approaches at the main airports. The high cost of this system prevent the secondary airports to buy it and, as a consequence, restricts ...
    • GNSS data management and processing with the GPSTk 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (2010)
      Article
      Restricted access - publisher's policy
      We organize complex problems in simple ways using a GNSS data management strategy based on ‘‘GNSS Data Structures’’ (GDS), coupled with the open source ‘‘GPS Toolkit’’ (GPSTk) suite. The code resulting from using the ...
    • GNSS receivers using software defined radio: implementation, test and upgrades for high dynamics 

      López Lechuga, Melisa (Universitat Politècnica de Catalunya, 2016-02)
      Bachelor thesis
      Restricted access - confidentiality agreement
    • GNSS-R: a useful tool for sea target detection in near real-time 

      Di Simone, Alessio; Iodice, Antonio; Riccio, Daniele; Camps Carmona, Adriano José; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      This paper investigates a novel application of Global Navigation Satellite System-Reflectometry (GNSS-R) in the fields of maritime surveillance and safety, and climate change analysis, namely sea target detection in near ...
    • GNSS/INS Integration using Software Defined Radio Receiver 

      Aravindan, Avinash Manu (Universitat Politècnica de Catalunya, 2012-07-26)
      Master thesis
      Open Access
      [ANGLÈS] The aim of the thesis is to provide a simplified basic framework for the implementation of GNSS/INS integration using SDR receiver. This thesis investigates the different architectures of integration between the ...
    • Ionospheric scintillation monitoring using GNSS-R? 

      Camps Carmona, Adriano José; Hyuk, Park; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Barbosa, José; Fabbro, V; Lemorton, J; Orús Pérez, Raul (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      The characterization of the ionosphere and its impact on the propagation of radio-wave signals has received an increasing interest for satellite communications, Global Navigation Satellite Systems (GNSS) applications (i.e. ...
    • Joint energy and rate allocation for successive interference cancellation in the finite blocklength regime 

      Molina Oliveras, Francesc; Sala Álvarez, José; Villares Piera, Nemesio Javier; Rey Micolau, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference lecture
      Open Access
      This work addresses the optimization of the network spectral efficiency (SE) under successive interference cancellation (SIC) at a given blocklength n. We adopt a proof-of-concept satellite scenario where network users can ...
    • Looking for efficient and accurate ways of computing the global ionospheric electron density distribution from huge amounts of GNSS observations 

      Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; Monte Moreno, Enrique; Aragón Ángel, María Ángeles (2011)
      Lecture
      Open Access
      In this work the authors will explore different potential ways of estimating efficiently and accurately the global number density of ionospheric free electrons from the most part of nowadays available GNSS ...
    • Modelling forest decline using SMOS soil moisture and vegetation optical depth 

      Chaparro Danon, David; Piles de la Fuente, María Pilar; Martínez Vilalta, Jordi; Vall-Llossera Ferran, Mercedes Magdalena; Vayreda, Jordi; Banque, Mireia; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference report
      Restricted access - publisher's policy
      Global change is increasing the risk of forest decline worldwide, impacting carbon and water cycles. Hence, there is an urgent need for predicting forest decline occurrence. To that purpose, this study links forest decline ...
    • MONITOR Ionospheric Network: two case studies on scintillation and electron content variability 

      Beniguel, Yannick; Cherniak, Iurii; García Rigo, Alberto; Hamel, P.; Hernández Pajares, Manuel; Kameni, Roland; Kashcheyev, Anton; Krankowski, Andrzej; Monnerat, Michel; Nava, Bruno; Ngaya, Herbert; Orús Pérez, Raul; Secretan, Hugues; Serant, Damien; Schlüter, Stefan; Wilken, Volken (2017-03-13)
      Article
      Open Access
      The ESA MONITOR network is composed of high-frequency-sampling global navigation satellite systems (GNSS) receivers deployed mainly at low and high latitudes to study ionosphere variability and jointly with global GNSS ...
    • Multi Antenna Time of Arrival Estimation 

      Torrent Fontbona, Ferran (Universitat Politècnica de Catalunya, 2011-07-21)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Kungliga Tekniska högskolan
      English: In the communications literature exist many documents that explain how to use spatial diversity to improve the performance of the system. However, the use of spatial diversity has not been studied in depth for ...
    • Multi-Sensor Data Fusion for High-Precision Indoor/Outdoor UAV Navigation 

      Martin I Bosch, Carla; Bellés Ferreres, Andrea (Universitat Politècnica de Catalunya, 2019-02-14)
      Bachelor thesis
      Restricted access - author's decision
      El juny de 2015, la Comissió Europea va decidir invertir en el desenvolupament d’un nou projecte de recerca anomenat TIMON, incl òs dins del programa Horizon 2020. El principal objectiu d’aquest projecte europeu consisteix ...
    • Network-based High Accuracy Positioning with the GPSTk 

      Salazar Hernández, Dagoberto José; Hernández Pajares, Manuel; Juan Zornoza, José Miguel; Sanz Subirana, Jaume (European Space Agency (ESA), 2010)
      Conference report
      Open Access
      This paper presents an implementation of a postprocess kinematic positioning technique similar to PPP (Precise Point Positioning) but based on a network of stations. This technique is independent of precise clock ...
    • New real-time GNSS algorithms for detection and measurement of potential geoeffective stellar flares 

      Moreno Borràs, David (Universitat Politècnica de Catalunya, 2019-07-05)
      Bachelor thesis
      Open Access
      Las fulguraciones estelares son incrementos repentinos de radiaciones electromagnéticas en la superficie de una estrella que contienen gran cantidad de energía. Son detectadas por telescopios tales como Swift o Fermi ...
    • Non-orthogonal transmission techniques for multibeam satellite systems 

      Pérez Neira, Ana Isabel; Caus, Marius; Vázquez Oliver, Miguel Ángel (2019-12-01)
      Article
      Open Access
      Non-orthogonal transmission is a promising technology enabler to meet the requirements of 5G communication systems. Seminal papers demonstrated that non-orthogonal multiplexing techniques outperform orthogonal schemes in ...