Now showing items 1-20 of 38

  • A contour matching approach for accurate NOAA-AVHRR image navigation 

    Eugenio, F; Marqués Acosta, Fernando; Suarez, E; Rovaris, E (Eurasip, 2000)
    Conference report
    Open Access
    Although different methods for NOAA AVHRR image navigation have already been established, the multitemporal and multi-satellite character of most studies requires automatic and accurate methods for navigation of satellite ...
  • A generic level 1 simulator for spaceborne GNSS-R missions and application to GEROS-ISS ocean reflectometry 

    Hyuk, Park; Camps Carmona, Adriano José; Pascual Biosca, Daniel; Kang, Yujin; Onrubia Ibáñez, Raúl; Querol Borràs, Jorge; Alonso Arroyo, Alberto (2017-07-18)
    Article
    Open Access
    In the past decade Global Navigation Satellites System Reflectometry (GNSS-R) has emerged as a new technique for earth remote sensing for various applications, such as ocean altimetry and sea state monitoring. After the ...
  • Agrupación plana alimentada por linea de sustrato suspendido 

    Torrents Dolz, Josep M.; Romeu Robert, Jordi; Jofre Roca, Lluís (1989)
    Conference report
    Open Access
    The purpose of this design is a new type of planar antenna with hi gh-efficency and large-bandwidth requirements of TVRO. A low loss suspended substrate line (SSL ) has been developed and optimisated for feed network.
  • Analysis of the relative dynamics of a charged spacecraft moving under the influence of a magnetic field 

    Cheng, Yu; Gómez Muntané, Gerard; Masdemont Soler, Josep; Yuan, Jianping (2018-09-01)
    Article
    Restricted access - publisher's policy
    We analyse a dynamical scenario where a constantly charged spacecraft (follower) moves in the vicinity of another one (leader) that follows a circular Keplerian orbit around the Earth and generates a rotating magnetic ...
  • A stroboscopic control for the confinement of swarms in a spherical domain around the Earth 

    García Taberner, Laura; Masdemont Soler, Josep (2017)
    Conference report
    Restricted access - publisher's policy
    Swarms of spacecraft are an idea that has been growing in interest in the last few years. This work focuses on the strategies and costs for the maintenance of a swarm of a large number of spacecraft in a close neighborhood ...
  • Atmospheric turbulence profile modeling for satellite-ground laser communication 

    Otoniel Canuet, Lucien François (Universitat Politècnica de Catalunya, 2015-07-23)
    Master thesis
    Open Access
    Covenantee:  Deutsches Zentrum für Luft-und Raumfahrt
    The major limitation of free-space laser communications' performances is due to atmospheric turbulence. Free-space optical channels are characterized by a set of different parameters such as the scintillation index, the ...
  • A web interface for satellite scheduling problems 

    Xhafa Xhafa, Fatos; Garcia, Carlos; Barolli, Admir; Takizawa, Makoto (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Open Access
    Mission planning plays an important role in satellite control systems, especially with increase of number of satellites and more complex missions to be planned. In a general setting, the satellite mission scheduling consists ...
  • Can we measure vegetation water content and vegetation opacity at L-band with a single GPS receiver? 

    Alonso Arroyo, Alberto; Querol Borràs, Jorge; Camps Carmona, Adriano José; Onrubia Ibáñez, Raúl; Hyuk, Park; Pascual Biosca, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    This work shows a technique to estimate the vegetation opacity and infer the vegetation water content using a single GPS receiver located under the vegetation layer being analyzed. It is based on the measurement of the ...
  • Co-channel interference cancellation at the user terminal in multibeam satellite systems 

    Cocco, Giuseppe; Angelone, Martina; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Open Access
    We study the applicability of soft interference cancellation in the forward link of commercial multibeam satellite systems with focus on mobile terminals. We adopt a standard currently used in commercial satellite systems ...
  • Design, development and test of ICI radiometer back-end modules in the frame of metop 2nd-gen satellite constellation 

    Albajar Garduño, Marc (Universitat Politècnica de Catalunya, 2018-10)
    Master thesis
    Restricted access - author's decision
    Covenantee:  TRYO
    This Thesis belongs to a scientific project realized by the TRYO Company, which is part of the aerospace sector of the SENER Group. It describes the design, analysis, measurements and results of one of the back-end modules ...
  • Détection and identification of homologous points in images 

    Espadaler Rodés, Joan (Universitat Politècnica de Catalunya, 2013-05)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  École nationale supérieure des télécommunications
    [ANGLÈS] Several correlation algorithms for satellite and aerial images are studied in this project to detect homologous key-points. These key-points are used to georeference images. Particularly, of a metric based on ...
  • Development of a SBAS-enabled software for integrity evaluation 

    Sala Vilar, Pol (Universitat Politècnica de Catalunya, 2009-02-28)
    Master thesis (pre-Bologna period)
    Open Access
    This project was developed for Indra Espacio in the context of a feasibility study about the future evolution of the European SBAS system EGNOS. The goal of the project is to add the Satellite Based Augmentation ...
  • Error propagation analysis in the processing of sar images for subsidence measuraments 

    Testolina, Paolo (Universitat Politècnica de Catalunya, 2018-07)
    Master thesis
    Open Access
    Covenantee:  Università degli Studi di Padova
    Every measurement of the physical world is affected by uncertainty, no matter how precise the available instruments are. In other words, a measure completely free of errors is not possible. Being able to quantify this ...
  • First Delay Doppler Maps obtained with the Microwave Interferometric Reflectometer (MIR) 

    Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Querol Borràs, Jorge; Alonso Arroyo, Alberto; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    The use of Global Navigation Satellite System (GNSS) signals for mesoscale altimetry was first proposed in [1]. Since then, many experiments and a couple of space missions have been carried out to validate the concept in ...
  • Fusió d’imatges de satèl·lit. Implementació en OpenEV 

    Gómez Clapers, Joan (Universitat Politècnica de Catalunya, 2007-11-07)
    Master thesis (pre-Bologna period)
    Open Access
    L’objectiu d’aquest treball és generar una documentació suficient com per poder crear, en posteriors projectes, un software a través del qual es pugui treballar amb dades generades a partir d’imatges de satèl·lit. El sistema ...
  • 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 ...
  • Integrated terrestrial-satellite wireless backhauling: resource management and benefits for 5G 

    Shaat, Musbah; Lagunas, Eva; Pérez Neira, Ana Isabel; Chatzinotas, Symeon (2018-07-13)
    Article
    Open Access
  • Mezclador equilibrado a 30 GHz para la recepción de la baliza B2 del satélite Olympus 

    Artal, Eduardo; Comerón Tejero, Adolfo (Universidad Politécnica de Madrid (UPM), 1988)
    Conference report
    Open Access
    The design and performance of a 30-GHz mixer is presented. The mixer is to be used in the RF front end of an earth station for the OPEX experiment with the propagation beacons of the ESA's Olympus satellite. It uses a ...
  • Minimum PER user-energy profile for massive SIC receivers under an average energy constraint 

    Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier; Molina Oliveras, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Restricted access - publisher's policy
    Interference may pose a severe limitation to massive wireless multiple access unless the central receiver is endowed with strong multipacket reception capabilities. In that respect, Interference Cancellation (IC) has been ...
  • Mission and Thermal Analysis of UPC Cubesat 

    Sintes Arroyo, Pol (Universitat Politècnica de Catalunya, 2009-12-22)
    Master thesis
    Open Access