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Portail > Offres > Offre UPR8001-EMMHEB-002 - Post-doctorant(e) (H/F) "Planification réactive d'une constellation de satellites"

"Reactive planning of observation satellites" H/F

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : samedi 28 janvier 2023

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General information

Reference : UPR8001-EMMHEB-002
Nombre de Postes : 1
Workplace : TOULOUSE
Date of publication : Wednesday, December 7, 2022
Type of Contract : FTC Scientist
Contract Period : 18 months
Expected date of employment : 31 March 2023
Proportion of work : Full time
Remuneration : Between € 2805 et 3224 (gross) per month depending on experience
Desired level of education : PhD
Experience required : Indifferent

Missions

This post-doc is part of the Japetus project, financed by CNES and the "plan France Relance". The consortium includes Prométhée, Safran, LeanSpace and CNRS.

The goal is to design a system of observation composed of a constellation of nano-satellites allowing high-frequency fly-bys and quick reactivity.

Activities

The research topic concerns in particular the design of efficient methods to plan the acquisitions and downloads of a constellation of satellites. These methods should address a range of challenges induced by the innovative solutions of the Japetus systems:

- Thanks to the choice of inclined orbits and to the size of the constellation (20 satellites) the frequency of fly-bys of a given point can be very high. This requires extremely efficient planning methods to take full advantage of this characteristic.

- The satellites of the constellation will be able to directly communicate (i.e., without relay from the ground), albeit with a very limited flow rate. This capability makes it possible to answer urgent requests, which can preempt the plan computed on the ground.In this case, it will be necessary to design a distributed and reactive approach to answer the urgent requests while minimally perturbating the original plan.

- Finally, since the operator of the constellation does not own a network of ground stations, the plans will need to include the usage of third-party stations in order to achieves the objectives while minimising the exploitation cost.

Skills

-This is a project with a strong industrial flavor, whose results will be deployed on a prototype of satellite in the short term. Therefore, the programming skills in general, and applied to combinatorial optimisation in particular (e.g., MIP, CSP, SAT, Local search, Metaheuristics, etc.) are essential.

However, the post-doc will take place in an academic research unit, whose objective is primarily scientific. Moreover, the candidate will have a certain autonomy in her or his research. Therefore, we look for a candidate with a strong background in some of the domains cited above, and/or in other relevant areas (more fondamental, like algorithm design, or more applied, like routing and scheduling).

Required documents:
- An up to date curriculum vitae;
- A scientific article that you wrote with a paragraph explaining the main contribution;
- One or at most two reference letter(s);
- Optionally, a link to one of your source code repositories, with a paragraph to explain the nature and the value of this code.

Work Context

The research will take place at LAAS-CNRS in Toulouse and in direct collaboration with
Silvano Dal Zilio (dal.zilio@laas.fr), Emmanuel Hebrard (hebrard@laas.fr) and Samir Medjiah (samir.medjiah@laas.fr).

The "Laboratoire d'Analyse et d'Architecture des Systèmes" (LAAS) is a laboratory of the CNRS with a wide range of activities. The post-doc will work with researchers from several teams of the lab:
- the team "Recherche Opérationnelle, Optimisation Combinatoire et Contraintes" (ROC)
- the team "Services and Architectures for Advanced Networks" (SARA)
- the team "Vérification de systèmes temporisés critiques" (VERTICS)

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