. "Satellite Navigation And Positioning"@en . . . . . . . . . . . . . . . . . . . . . . . "Development af an urban-ground-based augmentation system for urban air traffic"@en . . . . . "DLR Graduate Program"@en . . "Presential"@en . "4.00" . "no"@en . . . "Electrical engineering"@en . .