Exail est une entreprise industrielle de haute technologie spécialisée dans les technologies de pointe en robotique, maritime, navigation, aérospatiale et photonique.
Dotée d'une forte culture entrepreneuriale, Exail offre des performances, une fiabilité et une sécurité inégalées à ses clients civils et militaires opérant dans des environnements difficiles. Des profondeurs de la mer à l'espace, Exail étend ses capacités grâce à une gamme complète de composants, de produits et de systèmes robustes fabriqués en interne. Employant 1 500 personnes dans le monde, la société bénéficie d'une empreinte mondiale et exerce ses activités dans plus de 80 pays.
Exail est née de l'union des forces du groupe ECA et d'iXblue en 2022. C'est une filiale d'Exail Technologies, une entreprise familiale spécialisée dans la haute technologie. Subject : Multi-axis quantum accelerometer for onboard applications
iXatom is a joint research lab between the Laboratoire Photonique Numérique et Nanosciences (LP2N, www.lp2n.institutoptique.fr), specialized in novel atom interferometry techniques, and Exail (), a world industrial leader in the fields of photonics, inertial navigation and cold atom sensors.
In this unique environment at the boundary between fundamental research and applications, we are studying the next generation of quantum inertial sensors based on cold atoms, for onboard environments. By combining classical and quantum sensors, it is possible to improve the performance of inertial navigation systems by at least one order of magnitude with respect to existing technologies. However, using cold atom interferometers in moving carriers comes with many challenges which require in-depth studies before practical applications can exist.
The objective of the PhD project is to develop a multi-axis hybrid accelerometer with optimized performance despite the constraints relative to the movement of the vehicle. Beyond the proof of concept, the goal is to demonstrate the required precision for inertial navigation and onboard gravimetry.
This work will prepare future measurement campaigns on board a vehicle (truck, boat) and will include several aspects:
- Data fusion: Understanding how the hybridization of classical (accelerometers and gyroscopes) and quantum sensors can be optimized, both through hardware improvements and advanced sensor fusion techniques such as Kalman filtering.
- Multi-axis measurements using atom interferometry.
- Studying the systematic effects of a hybrid accelerometer in a dynamic environment, to ensure that the measurement accuracy is as high as possible.
- Tests on moving platforms simulating the real environment in acceleration and rotation.
- Experimental development: integration of the laser system, temperature stabilization
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