He was the founder of the Centre d'études de la navigation aérienne ( French air navigation center ) and co-founder of the CAUTRA system ( Système de contrôle automatisé du trafic aérien - automated air traffic control system ) , the computer system of the French air traffic management .
He is the founder of the Centre d'études de la navigation aérienne ( French air navigation center ) and co-founder of the CAUTRA system , the computer system of the French air traffic management .