Projet de thèse en Géosciences
Sous la direction de Nicolas Baghdadi.
Thèses en préparation à Montpellier en cotutelle avec CNRS Liban , dans le cadre de Biodiversité, Agriculture, Alimentation, Environnement, Terre, Eau (Montpellier ; École Doctorale ; 2015-...) , en partenariat avec TETIS - Télédétection Environnement Télédetection et Information Spatiale (laboratoire) depuis le 01-11-2016 .
Exploitation des données Sentinel-1 TOPS pour des applications en tomographie SAR et interférométrie sur des réflecteurs permanents : sites d'étude en Méditerranée
Exploiting TOPS Sentinel-1 for Tomography SAR and Persistent Scatterer Interferometry applications in Mediterranean
Numerous synthetic aperture radar (SAR) space-borne sensors are currently operating or will be launched in the near future. Consequently, there is a need to improve our knowledge of SAR data processing for land surfaces applications. For the first time, SAR data can be able to answer to land applications in a broad sense (natural habitats, rural areas, forests, natural hazards, urbanization) with all aspects. In particular, the high temporal frequency of the radar acquisitions that are currently being achieved mark the beginning of a new era for the application of the techniques of interferometry, polarimetry, and tomography. While interferometry and polarimetry techniques are well known, the tomography is quite new and state-of-the-art technique which provides the unique information in vertical direction. The rationale of tomography is to employ multiple flight tracks, nearly parallel to each other [1,2]. The ensemble of all flight lines allows us to form a 2D synthetic aperture, resulting in the possibility to focus the signal in the whole 3D space. In other words, by exploiting tomography, multi-baseline SAR data can be converted into a new multi-layer SAR data stack where each layer represents scattering contributions associated with a certain height . In this context, there is a need to reinforce the methodological and thematic developments in relation to future space missions dedicated to major scientific and societal issues: the Sentinel-1 mission by European Space Agency (ESA). In this project, we propose a framework to actively process with interferometry and tomographic Sentinel-1 TOPS SAR C-band(S1) . The specific project objectives will then be as follows: 1. To investigate urban tomography. 2. To combine urban tomography and PSI. These topics will be the tasks to be studied during the project: Task 1 aims to investigate urban tomography performance of S1 Task 2 aims to investigate PSI performance of S1