Exploració per tema "Satèl·lits artificials en navegació"

Ara es mostren els items 1-20 de 87

    • 3CAT-3/MOTS, an experimental nanosatellite for multispectral and GNSS-R earth observation: airborne optical and GNSS-R campaign 

      Castellví Esturi, Jordi; Camps Carmona, Adriano José; Onrubia Ibáñez, Raúl; Alamús, Ramón; Pascual Biosca, Daniel; Querol Borràs, Jorge; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The 3 Cat-3/MOTS mission is a joint initiative between the Institut Cartogràfic i Geològic de Catalunya (ICGC) and the Universitat Politècnica de Catalunya-BarcelonaTech (UPC) to foster new and innovative technologies on ...

    • 3Cat-4: combined GNSS-R, L-Band radiometer with RFI mitigation, and AIS receiver for a I-Unit Cubesat based on software defined radio 

      Muñoz Martin, Joan Francesc; Miguélez Gómez, Noemí; Castellà Rubinat, Ricard; Fernandez Capon, Lara Pilar; Solanellas Bofarull, Arnau; Via Ortega, Pol; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The 3 Cat-4 mission aims to demonstrate the capabilities of nano-satellites plus the versatility of a Software Defined Radio for passive Earth Observation. Three different microwave payloads are integrated into a single ...

    • A design-oriented characterization framework for decentralized, distributed, autonomous systems: the nano-satellite swarm case 

      Araguz López, Carles; Closa, Marc; Bou Balust, Elisenda; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The design of autonomous operational schemes for distributed, decentralized systems is expected to bring multiple qualities to systems of this kind. One of their instances are Earth-observing swarms of nano-satellites, in ...

    • A Kinematic campaign to evaluate EGNOS 1046 maritime service 

      Ibáñez Segura, Deimos; Rovira Garcia, Adrià; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; González Casado, Guillermo; Alonso Alonso, María Teresa; López-Salcedo, José Antonio; Jia, Huamin; Pancorbo, Fransico Javier; García, Carlos; Martín, Irene; Abadía, Santos Rodrigo (ION Publications (The Institute of navigation), 2019)
      Text en actes de congrés
      Accés obert
      Global Navigation Satellite Systems (GNSSs) have improved the efficiency and accuracy of transportation means. In terms of safety, the European Geostationary Navigation Overlay System (EGNOS) is providing vertical and ...

    • A multi-frequency method to improve the long-term estimation of GNSS clock corrections and phase biases 

      Rovira Garcia, Adrià; Juan Zornoza, José Miguel; Sanz Subirana, Jaume; González Casado, Guillermo; Ventura Traveset, Javier; Cacciapuoti, Luigi; Schoenemann, Erik (2021-12)
      Article
      Accés obert
      The space segment of the Global Navigation Satellite System (GNSS) is equipped with highly stable atomic clocks. In order to use these clocks as references, their time offsets must be estimated from ground measurements as ...

    • Advanced methods of integration of GNSS and 3D models for positioning in deep urban canyons 

      Ortega González, Héctor (Universitat Politècnica de Catalunya, 2017-10)
      Treball Final de Grau
      Accés obert
      Classical GNSS positioning in urban environments presents a variety of problems such as satellite signal blockage, reflection and fading, mainly caused by buildings. These issues reduce the number of available satellites, ...

    • Airborne GNSS-R: A key enabling technology for environmental monitoring 

      Pérez Portero, Adrián; Muñoz Martin, Joan Francesc; Hyuk, Park; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Accés obert
      Weather forecast using GNSS-R relies, to a large extent, on data acquired by airborne and spaceborne platforms due to the extended coverage that can be achieved. GEO satellites can retrieve measurements over large areas ...

    • Airborne ionospheric gradient monitoring for dual-frequency GBAS 

      Gerbeth, Daniel; Caamaño Albuerne, María; Circiu, Mihaela-Simona; Felux, Michael (Curran Associates, Inc., 2022)
      Text en actes de congrés
      Accés obert
      Certified Ground Based Augmentation Systems (GBAS) as of today operate using only GPS signals in the L1 frequency band to enable precision approach guidance for landing aircraft. Ionospheric activity (i.e., scintillations ...

    • Altimetry with GNSS-R interferometry: first proof of concept experiment 

      Martín Neira, Manuel; Altena, B.; van Bree, R.; Van Der Marel, H.; Camps Carmona, Adriano José; Rius, Antonio; Nogués Correig, O.; Ribó Vedrilla, Serni; Cardellach, Estel; Oliveras, S.; Valencia Domènech, Enric; Hyuk, Park; Tarongí Bauzá, José Miguel (2012-04)
      Article
      Accés restringit per política de l'editorial
      The Global Navigation Satellite System Reflectometry (GNSS-R) concept was conceived as a means to densify radar altimeter measurements of the sea surface. Until now, the GNSS-R concept relied on open access to GNSS ...

    • An anti-jamming system for GNSS timing applications 

      Querol Borràs, Jorge; Camps Carmona, Adriano José; Manfredini, E.G.; Píriz, R. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
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      Radio-Frequency Interference (RFI) and jamming are increasing problems for timing applications based on Global Navigation Satellite Systems (GNSS). FENIX-lite is a real-time pre-correlation anti-jamming system designed to ...

    • Analysis and selection of a MEMS, multi-constellation GNSS receiver for a femtosatellite 

      Guerra Mentruit, Alejandro (Universitat Politècnica de Catalunya, 2020-02-14)
      Treball Final de Grau
      Accés obert
      Context: The expansion of space applications and their liberalization is an actual fact since the last decade. Small satellites are developed either by academic institutions and private companies. The concept of femtosatelites, ...

    • 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)
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      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 ...

    • Antena Bi-banda con conformación de dos haces simultáneos para sistemas GNSS-R 

      Onrubia Ibáñez, Raúl; Pascual Biosca, Daniel; Querol Borràs, Jorge; Hyuk, Park; Camps Carmona, Adriano José (Unión Científica Internacional de Radio (URSI), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Global Navigation Satellite Systems – Reflectometry (GNSS-R) is a relatively new remote sensing technique that benefits from GNSS signals as signals of opportunity as a bistatic radar. These signals can be processed as ...

    • Assessment of noise of MEMS IMU sensors of different grades for GNSS/IMU navigation 

      Suvorkin, Vladimir; García Fernández, Miquel; González Casado, Guillermo; Li, Mowen; Rovira Garcia, Adrià (Multidisciplinary Digital Publishing Institute (MDPI), 2024-03-19)
      Article
      Accés obert
      Inertial measurement units (IMUs) are key components of various applications including navigation, robotics, aerospace, and automotive systems. IMU sensor characteristics have a significant impact on the accuracy and ...

    • Bayesian signal processing techniques for GNSS receivers: from multipath mitigation to positioning 

      Closas Gómez, Pau (Universitat Politècnica de Catalunya, 2009-06-15)
      Tesi
      Accés obert
      Aquesta tesi gira al voltant del disseny de receptors per a sistemes globals de navegació per satèl·lit (Global Navigation Satellite Systems, GNSS). El terme GNSS fa referència a tots aquells sistemes de navegació basats ...

    • ³Cat-4 Mission: a 1-unit cubesat for earth observation with a L-band radiometer and a GNSS-reflectometer using software defined radio 

      Ruiz De Azúa Ortega, Juan Adrián; Muñoz Martin, Joan Francesc; Fernandez Capon, Lara Pilar; Badia Ballús, Marc; Llaveria Godoy, David; Diez Garcia, Carlos; Aguilella, Andrea; Pérez Portero, Adrián; Milián, O.; Sobrino Hidalgo, Marco; Navarro Trastoy, Ángel; Lleó, H.; Sureda Anfres, Miquel; Soria Guerrero, Manel; Calveras Augé, Anna M.; Camps Carmona, Adriano José (2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Global Navigation Satellite System Reflectometry and L-band microwave radiometry have been used for soil moisture, biomass, and cryosphere studies. Combining both technologies in a low-power and cost-effective solution ...

    • Compass adjustment by GPS (or any other GNSS receiver) and a single visual reference 

      Moncunill Marimon, Jorge; Martínez de Osés, Francesc Xavier; Cabal Álvarez, Rafael (2023-08-01)
      Article
      Accés obert
      This paper proposes a proper compass adjustment method using only a GPS (or any other GNSS receiver) and a single visual reference to enhance the efficiency of compass adjustment. During compass adjustment, the ship proceeds ...

    • Contributions to earth observation using gnss-r opportunity signals 

      Rodríguez Álvarez, Nereida (Universitat Politècnica de Catalunya, 2011-12-22)
      Tesi
      Accés obert
      During years a number of satellites have been developed to remotely sense Earth geophysical parameters for weather forecasting and other climate studies. In recent years the use of reflected Global Navigation Satellite ...

    • Deep learning for experimental hybrid terrestrial and satellite interference management 

      Henarejos, Pol; Vázquez Oliver, Miguel Ángel; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Interference Management is a vast topic present in many disciplines. The majority of wireless standards suffer the drawback of interference intrusion and the network efficiency drop due to that. Traditionally, interference ...

    • Definición e implementación del sistema GNSS para la navegación de un robot agrícola autónomo 

      Rodríguez Marín, Juan Pablo (Universitat Politècnica de Catalunya, 2023-07-12)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   CDEI-DM - Centre de Disseny d'Equips Industrials-Dinàmica de Màquines
      El present treball de fi de grau avalua els diferents tipus sistemes GNSS, determinant els components essencials que han d'adquirir-se per a aconseguir un sistema funcional. S'analitzaran les diferents constel·lacions ...