Browsing Programa de Doctorat en Ciència i Tecnologia Aeroespacials by Subject "629"

A systematic approach to airborne sensor orientation and calibration: method and models

Blázquez González, Marta (Date of defense: 2012-07-03)

Avui dia, s'estima que el mercat de la geom atica mou pels volts de 30 bilions d'euros. Al darrera del creixement d'aquest mercat hi trobem noves tecnologies,projectes i aplicacions, com per exemple, \Global Positioning ...

Aircraft trajectory estimation and guidance mode identification using bayesian filtering techniques

Khaledian, Homeyra (Date of defense: 2024-09-27)

(English) The dissertation explores advanced methods for aircraft trajectory estimation and trajectory prediction (TP), which are critical for the next generation of Air Traffic Management (ATM) systems operating under the ...

An analysis of two-phase flows in conditions relevant to microgravity

Arias Calderon, Santiago (Date of defense: 2011-09-23)

Promising technological applications of two-phase flows in space have captured the increasing interest of the space sector, provoking a strong demand for more fundamental knowledge. Great efforts have been made in recent ...

Collective dynamics of bulk metallic glasses studied by molecular dynamics simulations

Valles Sales, Araceli (Date of defense: 2014-09-25)

The development of new materials impacts on all branches of engineering and, in particular, in aerospace engineering. Metallic glasses (MG) are relatively newcomers to the world of materials science and have excellent ...

Comparison of the response of different configurations of aircraft repair patches under static and dynamic loading

Pitta, Siddharth (Date of defense: 2020-07-10)

In the modern era of transportation, air travel has gained a huge pace and still kept increasing. The global demand for air transport is increasing at a rate of 6%, because of population growth and ticket price reductions. ...

Contribution to the development of pico-satellites for Earth observation and technology demonstrators

Jové Casulleras, Roger (Date of defense: 2015-02-17)

The submitted Ph.D. thesis is a contribution to the development of pico-satellites and nano-satellites for Earth Observation and Technology Demonstrators. Development of satellites with a mass from 1 kg up to 10 kg has ...

Contributions to GNSS-R earth remote sensing from nano-satellites

Carreno-Luengo, Hugo (Date of defense: 2016-01-21)

Global Navigation Satellite Systems Reflectometry (GNSS-R) is a multi-static radar using navigation signals as signals of opportunity. It provides wide-swath and improved spatio-temporal sampling over current space-borne ...

Contributions to multi-purpose GNSS positioning to support multi-frequency and multi-constellation with high accuracy and integrity

Ibáñez Segura, Deimos (Date of defense: 2023-10-23)

(English) Global Navigation Satellite System (GNSS) have revolutionized location and timing technologies due to their low cost and wide availability. Initially, GNSS was limited to the american Global Positioning System ...

Contributions to real-time monitoring of the ionosphere using GNSS signals

Timoté Bejarano, Cristhian Camilo (Date of defense: 2023-03-27)

(English) This document presents the collection of four manuscripts published during my Doctoral academic formation, which main goal has been the real-time implementation of tools to monitor the ionosphere using Global ...

Cost-based linear holding practice and collaborative air traffic flow management under trajectory based operations

Xu, Yan (Date of defense: 2018-11-20)

The current air transportation system is reaching the capacity limit in many countries/regions across the world. It tends to be less efficient or even incapable sometimes to deal with the enormous air traffic demand that ...

Counter a drone via deep reinforcement learning

Çetin, Ender (Date of defense: 2023-08-30)

(English) Unmanned aerial vehicles (UAV) also known as drones have been used for a variety of reasons such as surveillance, reconnaissance, shipping and delivery, etc. and commercial drone market growth is expected to reach ...

Cruise speed reduction for air traffic flow management

Delgado Muñoz, Luis (Date of defense: 2013-04-08)

Avui dia un considerable nombre d’infraestructures del transport aeri tenen problemes de congestió. Aquesta situació es veu empitjorada amb l’increment de trànsit existent i amb la seva densitat deguda al sistema de hub i ...

Deep learning techniques for demand-capacity balancing

Mas Pujol, Sergi (Date of defense: 2023-05-12)

(English) Nowadays Air Navigation Service Providers (ANSPs) have to handle and accommodate a continuously increasing traffic demand in a scenario that is expected to be more time-efficient and cost-efficient. Meeting the ...

Dynamic stochastic modeling for inertial sensors

Wis Gil, Mariano (Date of defense: 2016-11-02)

Es ampliamente conocido que los modelos de error para sensores inerciales tienen dos componentes: El primero es un componente determinista que normalmente es calibrado por el fabricante en el firmware de la IMU. El segundo ...

Dynamics and control for continuous low-thrust spacecraft near collinear libration points

Gao, Chen (Date of defense: 2022-05-18)

Due to the rich dynamic properties of the equilibria of the Restricted Three Body Problem (RTBP), the libration point orbits (LPOs) around them are ideal locations for scientific missions. Fortunately, these invariant ...

Dynamics and control of tethered satellite formations in low-Earth orbits

Fedi Casas, Manrico (Date of defense: 2015-04-24)

This thesis is focused on the study of dynamics and control of a multi-tethered satellite formation, where a multi-tethered formation is made up with several satellites (agents) connected by means of cables (tethers). The ...

Galileo broadcast ephemeris and clock errors, and observed fault probabilities for ARAIM

Alonso Alonso, María Teresa (Date of defense: 2023-03-03)

(English) The characterization of Clock and Ephemeris error of the Global Navigation Satellite Systems is a key element to validate the assumptions for the integrity analysis of GNSS Safety of Life (SoL) applications. ...

Ground and marine resilient integration technology of multi-source sensors for navigation and positioning

Li, Mowen (Date of defense: 2024-07-31)

(English) The present thesis focuses on the resilient terrestrial and marine technological integration for navigation and positioning based on the Global Navigation Satellite System (GNSS), the Inertial Navigation System ...

Machine learning for aircraft trajectory prediction: a solution for pre-tactical air traffic flow management

Mateos Villar, Manuel (Date of defense: 2022-11-08)

(English) The goal of air traffic flow and capacity management (ATFCM) is to ensure that airport and airspace capacity meet traffic demand while optimising traffic flows to avoid exceeding the available capacity when it ...

Magnetic diagnostics algorithms for LISA Pathfinder: system identification and data analysis

Díaz Aguiló, Marc (Date of defense: 2011-10-27)

LISA (Laser Interferometer Space Antenna) is a joint mission of ESA and NASA, which aims to be the first space-borne gravitational wave observatory. LISA will consist in a constellation of three spacecraft at the vertexes ...