The candidate will draw on the skills of 3 laboratories BRGM, LPG and ONERA. The doctoral student will share its time between BRGM-Orléans (50%) and ONERA-Toulouse (50%).
Start: end of November 2020
Contacts: xavier.briottet@onera.fr , g.grandjean@brgm.fr
Objective of the thesis: The objective of this new thesis aims to improve, validate and extend our methodology in order to build a clay hazard map based on hyperspectral airborne acquisitions on an ULM light carrier or drone. To this end, work will focus on an assessment and improvement of the methods of mixing change of scale (change from cm to dm, role of local shadows and sparse vegetation), development of a new research strategy for mixing poles using all of the area covered by an aircraft (contribution of machine learning), evaluation of the contribution of exogenous data (1: 50,000 soil mapping) and / or multi-time acquisitions to improve our estimates, in order to take better account of soil moisture.
