Exploració per tema "Artificial satellites"
Ara es mostren els items 21-40 de 282
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Anàlisi de viabilitat d'un satèl·lit en òrbita LEO
(Universitat Politècnica de Catalunya, 2010-01-20)
Treball Final de Grau
Accés obertThe 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
(Universitat Politècnica de Catalunya, 2023-07-06)
Treball Final de Grau
Accés obertThe 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
(2016)
Text en actes de congrés
Accés obertThe 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
(2018-03-26)
Article
Accés obertWhile 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
(2017)
Text en actes de congrés
Accés obertEarth 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
(Institute of Electrical and Electronics Engineers (IEEE), 2022-04-22)
Article
Accés obertCohesive 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
(Institute of Electrical and Electronics Engineers (IEEE), 2020-09-07)
Article
Accés obertSince 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
(Universitat Politècnica de Catalunya, 2022-04-29)
Comunicació de congrés
Accés obertSmall 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
(Universitat Politècnica de Catalunya, 2022-04-29)
Comunicació de congrés
Accés obertThis 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
(Universitat Politècnica de Catalunya, 2022-06-21)
Treball Final de Grau
Accés restringit per decisió de l'autor
Realitzat a/amb: Université de LilleIn 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
(European Space Agency (ESA), 2022)
Text en actes de congrés
Accés restringit per política de l'editorialMetOp 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
(Universitat Politècnica de Catalunya, 2017-05-05)
Treball Final de Grau
Accés obert
Realitzat a/amb: École polytechnique de MontréalFrom 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
(2022-10)
Article
Accés obertA 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
(Universitat Politècnica de Catalunya, 2022-04-29)
Comunicació de congrés
Accés obertOrbiSat 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
(Universitat Politècnica de Catalunya, 2018-07-27)
Treball Final de Grau
Accés obert
Realitzat a/amb: NanoSat LabThe 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
(Universitat Politècnica de Catalunya, 2016-06-27)
Treball Final de Grau
Accés obertEste 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
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés obertWe 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
(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
(Universitat Politècnica de Catalunya, 2016-07)
Projecte Final de Màster Oficial
Accés obertEl 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
(Universitat Politècnica de Catalunya, 2022-04-29)
Comunicació de congrés
Accés obertThere 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 ...