Exploració per tema "Artificial satellites in telecommunication"

Ara es mostren els items 1-20 de 201

    • 20/30 GHz front-end for the TMS-7 receiving station of the OLYMPUS satellite 

      Artal, E; Bará, J; Berenguer Sau, Jordi; Comerón Tejero, Adolfo; Corbella Sanahuja, Ignasi; Pradell i Cara, Lluís (1989)
      Text en actes de congrés
      Accés obert
      The authors present the 20/30-GHz front-end of the TMS-7 station for performing the measurement of the flux density of one or more signal carriers received from the OLYMPUS satellite. The front-end is composed of two ...

    • 3Cat-1: a multi-payload Cubesat-based scientific and technology demonstrator 

      Jové Casulleras, Roger; Camps Carmona, Adriano José; Ramos Castro, Juan José; Alarcón Cot, Eduardo José; Bou Balust, Elisenda; Carreño Luengo, Hugo; Amézaga Sarries, Adrià; Olivé Muñiz, Roger; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Araguz López, Carles; Marí Barceló, Marc; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel; Iannazzo Soteras, Mario Enrique (European Spatial Agengy (ESA), 2014)
      Comunicació de congrés
      Accés obert

    • 3Cat-1: Attitude determination and control subsystem design 

      Vidal Mateu, David (Universitat Politècnica de Catalunya, 2013-12-10)
      Treball Final de Grau
      Accés obert
      [ANGLÈS] This project is focused on the design and implementation of an attitude control system for the satellite 3Cat-1. Using a passive system cwith permanent magnets and an active system, consisting of a coil as actuator.

    • 3CAT-3/MOTS, an experimental nanosatellite for multispectra and GNSS-R Earth Observation: Mission concept and analysis 

      Castellví Esturi, Jordi; Camps Carmona, Adriano José; Corbera Fauria, Jordi; Alamús, Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      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 ...

    • A 3D printed lens antenna for 5G applications 

      Ballesteros, Christian; Maestre, Marcos; Santos Blanco, M. Concepción; Romeu Robert, Jordi; Jofre Roca, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Comunicació de congrés
      Accés obert
      A switchable multi-antenna architecture for lens-assisted beamsteering in the Ka-band region allocated for 5G communications (24-30 GHz) is proposed. The radiating elements are bow-tie antennas mounted with a 3D printed ...

    • A case study on the communications subsystem for cubesat 

      Cebrián Herrera, Natalia (Universitat Politècnica de Catalunya, 2014-06-09)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Universidade de Fortaleza
      Due to the overwhelming increment transmission and reception of information around the world, Satellite Communications have become an essential application in our lives. Proof of this, are the continuous investments made ...

    • A Cross-layer architecture for DVB-S2 Broadband Satellite systems with QoS support 

      Rendón Morales, Elizabeth; Mata Diaz, Jorge; Muñoz Tapia, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper we propose an architecture to provide Quality of Service (QoS) guarantees for DVB-S2 broadband satellite systems. The proposed architecture provides low complexity on its implementation and can seamlessly ...

    • A design strategy for phase synchronization in precoding-enabled DVB-S2X user terminals 

      Martínez Marrero, Liz; Merlano-Duncan, Juan Carlos; Querol Borràs, Jorge; Chatzinotas, Simeon; Camps Carmona, Adriano José; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      This paper address the design of a phase tracking block for the DVB-S2X user terminals in a satellite precoding system. The spectral characteristics of the phase noise introduced by the oscillator, the channel, and the ...

    • A Ground Station software framework and telemetry management system for Nano-satellite missions 

      Ballesteros Sánchez, Christian (Universitat Politècnica de Catalunya, 2016-06)
      Treball Final de Grau
      Accés obert

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

      González Rufián, Raquel; Naudó Vallverdú, Juan (Universitat Politècnica de Catalunya, 2011-07-15)
      Treball Final de Grau
      Accés obert
      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)
      Projecte Final de Màster Oficial
      Accés obert
      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 ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • A novel dissemination protocol to deploy opportunistic services in federated satellite systems 

      Ruiz De Azúa Ortega, Juan Adrián; Calveras Augé, Anna M.; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-08-03)
      Article
      Accés obert
      The Earth Observation community is demanding new satellite applications that cover the need of monitoring different areas with high spatial resolution and short revisit times. These applications will generate huge amounts ...

    • A scalable distributed autonomy system for fractionated satellite missions 

      Rodrigo Muñoz, Santiago (Universitat Politècnica de Catalunya, 2016-02-11)
      Treball Final de Grau
      Accés obert
      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 ...

    • A shared CubeSat and LEO constellation for quantum key distribution service and 5G IoT service: QUANGO project overview and design considerations 

      Sarica, Danilo; Balossino, Alessandro; Simonetti, Simone; Vallone, Giuseppe; Villoresi, Paolo; Berra, Federico; Guadalupi, Marco; Llorens Aymerich, Isaac; Ferrer, Josep; Ferrús Ferré, Ramón Antonio (International Astronautical Federation, 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Secure and reliable exchange of data and information plays a crucial role in our society, for example protecting money transfers, commercial transactions, medical data, remote control of sensible infrastructures, etc. ...

    • Accurate phase synchronization for precoding-enabled GEO multibeam satellite systems 

      Martínez Marrero, Liz; Merlano Duncan, Juan Carlos; González Rios, Jorge Luis; Krivochiza, Jevgenij; Chatzinotas, Symeon; Ottersten, Bjorn; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2024)
      Article
      Accés obert
      Synchronizing the local oscillators in multibeam satellites with the objective of coherent communications is still an open challenge. It has to be addressed to implement full-frequency reuse approaches, such as precoding ...

    • Adaptive beam pattern selection and resource allocation for NOMA-based LEO satellite systems 

      Wang, Anyue; Lei, Lei; Hu, Xin; Lagunas Targarona, Eva; Pérez Neira, Ana Isabel; Chatzinotas, Symeon (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      The low earth orbit (LEO) satellite system is one of the promising solutions to provide broadband services to a wide-coverage area for future integrated LEO-6G networks, where users' demands vary with time and geographical ...

    • Adaptive IP scheduler design to support QoS guarantees over satellite systems 

      Rendón Morales, Elizabeth; Mata Diaz, Jorge; Alins Delgado, Juan José; Muñoz Tapia, José Luis; Esparza Martín, Óscar (2012-06)
      Article
      Accés obert
      This paper presents an adaptive algorithm for man-aging the weight values of the Weighted Round Robin (WRR)scheduler to provide End-to-End (E2E) Quality of Service (QoS)guarantees for Broadband satellite ...

    • Adaptive optics without wave-front sensor using the APHEFIS (Adaptive Optics by Phase Estimation from Focal Intensity Speckles) algorithm 

      Muñoz Fuentes, Manuel (Universitat Politècnica de Catalunya, 2012-07-19)
      Projecte/Treball Final de Carrera
      Accés obert
      [ANGLÈS] Compensation of the distorsions introduced to the optical wavefronts by the atmosphere using the algorithm APHEFIS, developed by Dr. Dirk Giggenbach.

    • Advanced interference mitigation techniques for the forward link of multi-beam broadband satellite systems 

      Devillers, Bertrand; Pérez Neira, Ana Isabel (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      High throughput satellite systems are expected to rely in the user link on multi-beam architectures with small beam footprints and strong frequency reuse among beams, and will therefore operate in an interference limited ...