Phd Candidate for Deployment and Control of a

il y a 1 mois

Luxembourg Université du Luxembourg Temps plein

SnT is a leading international research and innovation centre in secure, reliable and trustworthy ICT systems and services. We play an instrumental role in Luxembourg by fueling innovation through research partnerships with industry, boosting R&D investments leading to economic growth, and attracting highly qualified talent.

GNSS-R is a technique to carry out Earth observation based on reflections on the ground (or sea, or ice) of signals originating from GNSS (Global Navigation Satellite System) signals. The proposed project consists of educating a new generation of experts, at doctoral level, able to bring a qualitative leap to this technology. The scientific and technological goal consists of developing such systems based on a synchronized constellation of Cubesats. An important advantage of this arrangement is the very low cost of cubesats and the possibility to increase resolution based on beamforming from the satellites. Ground truth, as well as some of the methods, will originate from near-field radar technology. This will require further research on all segments of GNSS-R technology and beyond: launching and adjustment of cubesat formations, RF synchronization, interferometry between moving platforms, calibration of RF front-ends, ground testing making use of drones, cubesat systems, on-board processing, data transfer and analysis, translation into ground truth and into predictions important for climate change studies and for optimal territory management. The project may also benefit to other technologies making use of interferometry, such as radioastronomy and phased array based communications. It is also expected to assist industry segments making use of GNSS signals, such as precision agriculture, forestry and sea and land management.

We’re looking for people driven by excellence, excited about innovation, and looking to make a difference. If this sounds like you, you’ve come to the right place

**Your Role**:
This PhD project aims at the development of an improved distributed control of such formations of small satellites, also using a combination of solar and aerodynamic forces for propellant-less control. This will be ideal to deploy, maintain and reconfigure cost-efficiently a large formation of small satellites but requires the detailed modelling of the satellite dynamics, including the effects of aerodynamic forces (caused by the residual atmosphere in LEO) and the solar radiation pressure. After an analysis of optimal formation geometries for Earth observation, suitable orbital guidance and attitude control approaches will be developed and tested, using advanced simulation tools as well as formation flight experiments on a smaller scale with drones. These flight tests will also provide a better understanding of the level of control needed to achieve satisfactory beamforming.
- Carry out the aforementioned research with collaborators at the SnT and members of the large European GLITTER consortium
- Participate in the training program of the GLITTER project
- spent a research stay (6 months) at the Université Catholique de Louvain (UCL), to work with Prof. C. Craeye on RF synchronization between satellites and the impact on formation control
- Disseminate your findings at renowned international conferences and workshops and in journal papers
- Provide assistance in organizational matters related to GLITTER

**Your Profile**:

- Solid experience / knowledge in the following areas:

- Mathematical and Control Engineering, especially related to spacecraft guidance,
navigation and control
- Modeling and simulation of spacecraft dynamics
- Spacecraft formations/swarms
- Control of drones and flight experiments as well as knowledge in GNSS would be an asset
- Outstanding academic records
- Teamworking experience, e.g. via student projects, competitions or similar
- International experience is desirable, e.g., via a study abroad, internships, Erasmus, double-degree

**Programming Skills**: Experience with MATLAB/Simulink and Python, programming skills in C/C++ are an asset

**Language Skills**:Fluent written and verbal communication skills in English are required

**Eligibility criteria for HEU Marie-Skłodowska-Curie Doctoral Networks**:
**Here’s what awaits you at SnT**:

- **A stimulating learning environment.** Here post-docs and professors outnumber PhD students. That translates into access and close collaborations with some of the brightest ICT researchers, giving you solid guidance
- **Exciting infrastructures and unique labs.** At SnT’s two campuses, our researchers can take a walk on the moon at the LunaLab, build a nanosatellite, or help make autonomous vehicles even better
- **The right place for IMPACT. **SnT researchers engage in demand-driven projects. Through our Partnership Programme, we work on projects with more than 55 industry partners
- **Multiple funding sources for your ideas**. The University supports researchers to acquire funding from national, European and pri

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