Ara es mostren els items 1-20 de 26

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

    Eugenio, F; Marqués Acosta, Fernando; Suarez, E; Rovaris, E (Eurasip, 2000)
    Text en actes de congrés
    Accés obert
    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
    Accés obert
    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 ...
  • A web interface for satellite scheduling problems 

    Xhafa Xhafa, Fatos; Garcia, Carlos; Barolli, Admir; Takizawa, Makoto (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés obert
    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 ...
  • Agrupación plana alimentada por linea de sustrato suspendido 

    Torrents Dolz, Josep M.; Romeu Robert, Jordi; Jofre Roca, Lluís (1989)
    Text en actes de congrés
    Accés obert
    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.
  • Atmospheric turbulence profile modeling for satellite-ground laser communication 

    Otoniel Canuet, Lucien François (Universitat Politècnica de Catalunya, 2015-07-23)
    Projecte Final de Màster Oficial
    Accés obert
    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 ...
  • 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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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)
    Text en actes de congrés
    Accés obert
    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 ...
  • Development of a SBAS-enabled software for integrity evaluation 

    Sala Vilar, Pol (Universitat Politècnica de Catalunya, 2009-02-28)
    Projecte/Treball Final de Carrera
    Accés obert
    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 ...
  • Détection and identification of homologous points in images 

    Espadaler Rodés, Joan (Universitat Politècnica de Catalunya, 2013-05)
    Projecte/Treball Final de Carrera
    Accés obert
    [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 ...
  • 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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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)
    Projecte/Treball Final de Carrera
    Accés obert
    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)
    Projecte/Treball Final de Carrera
    Accés obert
    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 ...
  • 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)
    Text en actes de congrés
    Accés obert
    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 ...
  • Mission and Thermal Analysis of UPC Cubesat 

    Sintes Arroyo, Pol (Universitat Politècnica de Catalunya, 2009-12-22)
    Projecte Final de Màster Oficial
    Accés obert
  • Modeling of thermal environment for an astrophysical satellite 

    Bedmar Castillo, Francisco G. (Universitat Politècnica de Catalunya, 2010-06-01)
    Projecte Final de Màster Oficial
    Accés restringit per decisió de l'autor
    The aim of this thesis is to design a thermal analysis workflow for design of nano and micro satellites at the Space Center EPFL. Currently orbiting Swiss Cube nano satellite and a future extrasolar planet observation ...
  • NOMA and interference limited satellite scenarios 

    Caus, Marius; Vázquez, Miguel Ángel; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés obert
    This paper deals with the problem of non-orthogonal multiple access (NOMA) in multibeam satellite systems, where the signals are jointly precoded. It is considered that the number of frames that are simultaneously ...
  • Performance analysis of joint precoding and MUD techniques in multibeam satellite systems 

    Vázquez, Miguel Ángel; Caus, Marius; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés obert
    This paper considers interference mitigation techniques in the forward link of multibeam satellite systems. In contrast to previous works, either devoted to receiver interference mitigation (e.g. multiuser detection) or ...
  • Pseudo-heteroclinic connections between bicircular restricted four-body problems 

    Barrabés Vera, Esther; Gomez Muntané, Gerard; Mondelo, Josep Maria; Ollé Torner, Mercè (2016-10-11)
    Article
    Accés obert
    In this paper, we show a mechanism to explain transport from the outer to the inner Solar system. Such a mechanism is based on dynamical systems theory. More concretely, we consider a sequence of uncoupled bicircular ...
  • Robust array configuration for a microwave interferometric radiometer: application to the geoSTAR project 

    Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H. (IEEE Institute of Electrical and Electronics Engineers, 2007-01-31)
    Article
    Accés obert
    The Geostationary Synthetic Thinned Array Radiometer represents a promising new approach to microwave atmospheric sounding from geostationary orbit based on passive interferometry. One of the major concerns about the ...
  • SMOS: a satellite mission to measure ocean surface salinity 

    Font Capafons, Josep; Kerr, Y; Srokosz, M; Etcheto, J; Lagerloef, G S E; Camps Carmona, Adriano José; Waldteufel, P (European Geophysical Society, 2000)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The ESA's SMOS (Soil Moisture and Ocean Salinity) Earth Explorer Opportunity Mission will be launched by 2005. Its baseline payload is a microwave L-band (21 cm, 1.4 GHz) 2D interferometric radiometer, Y shaped, with three ...