Ara es mostren els items 21-40 de 282

    • Anàlisi de viabilitat d'un satèl·lit en òrbita LEO 

      Benzal Santamaria, Luis Alberto; Velasco Carcaboso, Vanessa (Universitat Politècnica de Catalunya, 2010-01-20)
      Treball Final de Grau
      Accés obert
      The present work analyses the requirements related to the orbit and the effects of the space radiation on Polosat, a toy-model satellite whose main goal is to monitor and image the Earth Poles. Our main objective has ...
    • Anomalies study in VTEC from SMOS data 

      Roura Garcés, Sergi (Universitat Politècnica de Catalunya, 2023-07-06)
      Treball Final de Grau
      Accés obert
      The main goal is to analyze the SMOS measurements and determine if there is any sign on them that could determine the possible effects of these natural phenomena on the ionosphere.
    • Applying autonomy to distributed satellite systems 

      Araguz López, Carles; Bou Balust, Elisenda; Alarcón Cot, Eduardo José (2016)
      Text en actes de congrés
      Accés obert
      The need for autonomy in several fields of aerospace engineering has become apparent and widely accepted during the last decade. Autonomy promises to improve the systems' performances, their robustness and tolerance to ...
    • 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
      Accés obert
      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 ...
    • Architectural optimization results for a network of earth-observing satellite nodes 

      Araguz López, Carles; Llaveria Godoy, David; Lancheros Sepulveda, Estefany Maria; Bou Balust, Elisenda; Camps Carmona, Adriano José; Alarcón Cot, Eduardo José; Lluch i Cruz, Ignasi; Matevosyan, Hripsime; Golkar, Alessandro; Tonetti, Stefania; Cornara, Stefania; Cote, Judith; Pierotti, Stéphane; Rodríguez, Pedro; Alvaro Sanchez, A.; Sochacki, Mateusz; Narkiewicz, Janusz (2017)
      Text en actes de congrés
      Accés obert
      Earth observation satellite programs are currently facing, for some applications, the need to deliver hourly revisit times, sub-kilometric spatial resolutions and near-real-time data access times. These stringent requirements, ...
    • Architectures and synchronization techniques for distributed satellite systems: a survey 

      Martínez Marrero, Liz; Merlano-Duncan, Juan Carlos; Querol Borràs, Jorge; Kumar, Sumit; Krivochiza, Jevgenij; Krishna Sharma, Shree; Chatzinotas, Symeon; Camps Carmona, Adriano José; Ottersten, Björn (Institute of Electrical and Electronics Engineers (IEEE), 2022-04-22)
      Article
      Accés obert
      Cohesive Distributed Satellite Systems (CDSSs) is a key enabling technology for the future of remote sensing and communication missions. However, they have to meet strict synchronization requirements before their use is ...
    • Assessing LoRa for satellite-to-Earth communications considering the impact of Ionospheric Scintillation 

      Fernandez Capon, Lara Pilar; Ruiz De Azúa Ortega, Juan Adrián; Calveras Augé, Anna M.; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2020-09-07)
      Article
      Accés obert
      Since the appearance of 5G, Internet of Things (IoT) has gained an increased interest, with multiple technologies emerging and converging to cover different user needs. One of the biggest challenges today is to have global ...
    • Assessment of a machine-vision-assisted test bed for spacecraft magnetic cleanliness analysis 

      Sans Monguiló, Alejandro; Adiwiluhung Riwanto, Bagus; Praks, Jaan (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      Small satellites are becoming increasingly popular in several applications, in which attitude systems might require high precision performance. These spacecrafts are susceptible to magnetic disturbances in orbit, such as ...
    • Attitude control research with educational nanosatellites 

      Martínez, Úrsula; Bravo, Luis; Gligor, Dan; Olfe, Karl; Bello, Álvaro; Ezquerro, José Miguel; Rodríguez, Jacobo; Salgado, Pablo (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      This paper introduces the three-axis attitude control of the ESAT platform. ESAT is a modular nanosatellite that implements the popular 10x10x10 cm CubeSat standard, designed for hands-on learning at different educational ...
    • Attitude determination based on image processing 

      Lemaire Lemaire, Adrien (Universitat Politècnica de Catalunya, 2022-06-21)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Université de Lille
      In this report, we will explore the way to measure the angular position of a satellite, more precisely of a CubeSat, expressed with the Euler angles. We therefore consider all the rotations that are possible in a ...
    • Back-end receivers for Metop Second Generation radiometers 

      Albajar Garduño, Marc; Monill Homs, Albert; Ramírez García, Joan; Catalán Artigas, Albert; Torralba, Ana; Capdevila Vives, Joan (European Space Agency (ESA), 2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      MetOp Second Generation (SG) satellites will give continuity to MetOp-A, -B and -C satellites launched in 2006, 2012 and 2016 respectively. MetOp-SG consists of two series of satellites (Satellite A and B) with three ...
    • Bounded gain-scheduled LQR satellite control using a tilted wheel 

      Martin Estraña, Veronica (Universitat Politècnica de Catalunya, 2017-05-05)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   École polytechnique de Montréal
      From the beginning of the satellite usage, the momentum created by its movements has been a concern that has to be taken into account for every space mission. Depending on the dimensions, ...
    • Business roadmap for the European Union in the NewSpace ecosystem: a case study for access to space 

      Rodríguez Donaire, Silvia; GIL MORA, PAULINO; García-Almiñana, Daniel; Crisp, Nicholas H.; HERDRICH, GEORG; Roberts, Peter C.E; KATARIA, DHIREN; HANESSIAN, VIRGINIA; Becedas, Jonathan; SEMINARI, SIMON (2022-10)
      Article
      Accés obert
      A business roadmap is a high-level strategic management tool that maps the actions to develop new industries. It serves as a guide to plan and forecast technological, market and product developments in a more operational ...
    • CANSAT Competition 2020: Best technical development by OrbiSat team 

      Hernando Diaz, David (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      OrbiSat is a high school educational project that was part of the CANSAT SPAIN 2020 student competition organized by ESERO. This project has ranked first in the Catalonia Championship and second at the National Championship, ...
    • Caracteritzation of noise in MEMS accelerometres for femtosats 

      Liebana Moradillo, Oscar (Universitat Politècnica de Catalunya, 2018-07-27)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   NanoSat Lab
      The aim of this thesis is to determine the characteristics of the noise of an ultralow noise MEMS accelerometer. The study of these characteristics will allow to determine if the accelerometer can be used in the scientific ...
    • ³Cat-3 3-axes ADCS using reaction wheels and magnetorquers 

      Mollà Garcia, Armand (Universitat Politècnica de Catalunya, 2016-06-27)
      Treball Final de Grau
      Accés obert
      Este TFG está basado en la experiencia ganada en la determinación de actitud y sistemas de control del 3Cat-2. Sistemas basados en los magnetorquers y TFGs previos del control de un eje y un sistema de 3 ejes de reaction ...
    • 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 ...
    • Communication link design at 437.5 MHz for a nanosatellite 

      Cantero Gómez, Jorge (Universitat Politècnica de Catalunya / Aalto-yliopisto, 2013-09-02)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Aalto-yliopisto. Sähkötekniikan korkeakoulu
      [ANGLÈS] The goal of this work was to design communication solution for the nanosatellite Aalto-2 which is an educational oriented CubeSat project started in 2012 by Aalto University, Finland. The main objective of the ...
    • Comparativa de sensores espaciales de diferente resolución espectral en la exploración minera 

      Lora López, Jose Carlos (Universitat Politècnica de Catalunya, 2016-07)
      Projecte Final de Màster Oficial
      Accés obert
      El reconocimiento de minerales en la superficie terrestre se lleva a cabo desde hace años con imágenes captadas desde satélites artificiales (LANDSAT, SPOT, EO-1, TERRA, etc.). La resolución espectral de los sensores a ...
    • Competition, research and extension: the three approaches to the popularization of small satellites in the Alto Paraopeba region in Brazil 

      Teixeira, André; Polito, João Pedro; Santos, Júlio; Kakitani, Marcos (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      There are several approaches to the diffusion of the space technologies, three of them are in this work: competition, research, and extension. Thus, the objective of this work is to focus on presenting the results of the ...