Now showing items 21-40 of 290

  • 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
  • A multi-agent adaptive protocol for femto-satellite applications 

    González Rufián, Raquel; Naudó Vallverdú, Juan (Universitat Politècnica de Catalunya, 2011-07-15)
    Bachelor thesis
    Open Access
    Femto-satellites are a very promising category of satellites that weigh less than 100 grams. Also, a Pico-Rover it is a self-contained robot that weighs less than 1 kilogram and its motion works by rolling the external ...
  • A multi-agent payload management approach for femtosatellite applications 

    Navarro Morales, Lara (Universitat Politècnica de Catalunya, 2011-09-21)
    Master thesis
    Open Access
    The reduction in size of electronic components makes feasible really small satellites like Femtosatellites with are less than 100 grams of mass. The main advantage of this kind of satellite is the multipoint of view when ...
  • Analysis of techniques for traffic optimization over satellite backhauling links 

    González Polo, Alvaro (Universitat Politècnica de Catalunya, 2013-10-21)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] In certain situations the operation of mobile operator infrastructure can be affected by natural disasters such as hurricanes, fires or earthquakes. This fact hinders optimum coordination of rescue actions and ...
  • Analysis of the potential of small satellites to cover the sea ice data products gap 

    Lancheros Sepulveda, Estefany Maria; Hyuk, Park; Camps Carmona, Adriano José; Di Simone, Alessio; Matevosyan, H.; Lluch, I. (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    This work reviews and analyses potentially relevant technologies to ensure that the gaps and stakeholder needs for sea ice products are covered. Each variable related to sea ice that presenting gaps using the European EO ...
  • Analysis of urban and vegetation growing in NW Senegal during the last 25 years using medium resolution imagery 

    Marcello, Javier; Calderero Patino, Felipe; Eugenio, Francisco; Marqués Acosta, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Land use and land cover information are key information for Governments in developing countries. In this context, remote sensing satellites like Landsat or SPOT can provide valuable data covering several decades. We have ...
  • An efficient implementation of the FAPEC compression algorithm in the CCSDS image standard 

    Artigues Aguiló, Gabriel (Universitat Politècnica de Catalunya, 2012-06-26)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] The implementation of an efficient image compressor using the FAPEC coder in the CCSDS image data compression standard (122.0).
  • A new design of high precision solar microsensor for satellite aplications 

    Delgado, Francisco; Ortega Villasclaras, Pablo Rafael; Lopez Tarrida, Cristina; Garcia Ortega, Juan; Angulo, Manuel; Quero Reboul, Jose Manuel (IEEE, 2010)
    Conference report
    Restricted access - publisher's policy
    This paper shows the design and calibration of an improved miniaturized two-axis sun sensor for satellite attitude control. The proposed new structure is based on a previous sun sensor structure by adding multiple sensing ...
  • An IBC solar cell for the UPC CubeSat-1 mission 

    Ortega Villasclaras, Pablo Rafael; Jové Casulleras, Roger; Pedret, A; Gonzalvez, G.; López Rodríguez, Gema; Martín García, Isidro; Domínguez Pumar, Manuel; Alcubilla González, Ramón; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    In this work the fabrication and electrical characterization of interdigitated back contact IBC solar cells is shown. These solar cells have been specifically designed for a CubeSat based satellite under developement at ...
  • An innovative interference mitigation approach for high throughput satellite systems 

    Caus, Marius; Pérez Neira, Ana Isabel; Angelone, Martina; Ginesi, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    This paper investigates how to boost the forward link capacity in multibeam satellite systems. Since co-channel interference is the main inhibitor to achieve the full potential of frequency reuse, we propose to mitigate ...
  • Antenna Modeller for Synthetic Aperture Radar Applications. Electromagnetic and Radiometric Considerations 

    Calafell Rueda, Irene (Universitat Politècnica de Catalunya, 2011-02-17)
    Master thesis
    Open Access
    The objective of the present Master Thesis is designing an optimizer of the excitation coefficients of a phased array antenna.
  • 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 ...
  • Applying autonomy to distributed satellite systems: Trends, challenges, and future prospects 

    Araguz López, Carles; Bou Balust, Elisenda; Alarcón Cot, Eduardo José (2018-03-26)
    Article
    Open Access
    While monolithic satellite missions still pose significant advantages in terms of accuracy and operations, novel distributed architectures are promising improved flexibility, responsiveness, and adaptability to structural ...
  • 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 ...
  • Architectural Model for Evaluating Space Communication Networks 

    Sánchez Net, Marc (Universitat Politècnica de Catalunya / Massachusetts Institute of Technology, 2012-12)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Massachusetts Institute of Technology
    [ANGLÈS] The space exploration endeavor started in 1957 with the launch and operation of the first manmade satellite, the URSS Sputnik 1. Since then, multiple space programs have been developed, pushing the limits of ...
  • Architectural optimization framework for earth-observing heterogeneous constellations : marine weather forecast case 

    Araguz López, Carles; Llaveria Godoy, David; Lancheros Sepulveda, Estefany Maria; Bou Balust, Elisenda; Camps Carmona, Adriano José; Alarcón Cot, Eduardo José; Tonetti, Stefania; Cornara, Stefania; Vicario, Gonzalo; Lluch i Cruz, Ignasi; Matevosyan, Hripsime; Golkar, Alessandro; Cote, Judith; Pierotti, Stéphane; Rodríguez, Pedro; Alvaro Sanchez, A.; Sochacki, Mateusz; Narkiewicz, Janusz (2019-01-25)
    Article
    Open Access
    Earth observation satellite programs are currently facing, for some applications, the need to deliver hourly revisit times, subkilometric spatial resolutions, and near-real-time data access times. These stringent requirements, ...
  • A scalable distributed autonomy system for fractionated satellite missions 

    Rodrigo Muñoz, Santiago (Universitat Politècnica de Catalunya, 2016-02-11)
    Bachelor thesis
    Open Access
    Current trends in space systems are towards the design of autonomous spacecraft that are capable to generate their own plans of action based on system constraints, on-board data analysis and mission goals set by ground ...
  • ASG-EUPOS versus ERGNSS; comparison between Polish and Spanish GNSS permanent station networks 

    Torres Mulase, Enrique (Universitat Politècnica de Catalunya, 2012-03-19)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Covenantee:  Uniwersytet Warmińsko-Mazurski w Olsztynie
  • Assessment of direct positioning for IR-UWB in IEEE 802.15.4a channels 

    Navarro, Mònica; Closas, Pau; Nájar Martón, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    This paper assesses the problem of localization in IR-UWB under realistic channel models for Direct Position Estimation (DPE) approaches. DPE schemes have been proposed for positioning and localization for well developed ...
  • Assessment of DME/TACAN RFI mitigation techniques in GNSS-R 

    Onrubia Ibáñez, Raúl; Querol Borràs, Jorge; Pascual Biosca, Daniel; Hyuk, Park; Alonso Arroyo, Alberto; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    Global Navigation Satellite Systems Reflectometry (GNSSR) is now being recognized as a powerfull tool for remote sensing. With the addition of new frequency bands and codes, it is possible to increase the resolution and ...