Browsing Programa de Doctorat en Ciència i Tecnologia Aeroespacials by Subject "55"

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Contributions to ionospheric modeling with GNSS in mapping function, tomography and polar electron

Lyu, Haixia (Date of defense: 2020-11-17)

This dissertation focuses on determining the vertical electron content distribution in low and high vertical resolution from ground-based and LEO on board GNSS data and improving the knowledge of ionosphere climatology in ...

GNSS-based global ionospheric maps : real-time combination, time resolution and applications on space weather monitoring

Liu, Qi (Date of defense: 2022-04-14)

The research of this paper-based dissertation is focused on the Global Ionospheric Maps (GIMs) based on Global Navigation Satellite System (GNSS) including real-time combination, validation, time resolution and applications. ...

High-resolution deformation measurement using "Persistent Scatterer Interferometry"

Devanthéry Arasa, Núria (Date of defense: 2014-10-31)

Persistent Scatterer Interferometry (PSI) is a group of advanced differential interferometric SAR techniques that are used to measure and monitor terrain deformation. Different PSI techniques have been proposed in the last ...

Sentinel-1 data exploitation for terrain deformation monitoring

Krishnakumar, Vrinda (Date of defense: 2022-09-29)

Persistent Scatterer interferometry (PSI) is a group of advanced differential interferometric Synthetic Aperture Radar (SAR) techniques used to measure and monitor terrain deformation. Sentinel-1 has improved the data ...

World-wide analysis and modelling of the ionospheric and plasmaspheric electron contents by means of radio occultations

Shao, Yixie (Date of defense: 2019-02-25)

The research of this dissertation is studying the ionosphere by GPS radio occultation (RO) techniques. It is mainly divided into two parts. The first part focuses on the methodology in electron density profile retrievals ...