Successful PhD on Data Link Technologies in Air Transport
July 9, 2025
Successful PhD on Data Link Technologies in Air Transport
Dr. Alexander Hillebrecht earns his doctorate on the benefits and design of innovative data link technologies in the air transport system
Dr. Alexander Hillebrecht from the DLR Institute of Air Transport has successfully defended his doctoral thesis with distinction at Hamburg University of Technology. In his dissertation, he examined the benefits and technical design parameters of novel data link technologies aimed at enhancing information exchange in the air transport system, especially in remote airspaces, through ad hoc networks. His research provides valuable insights for evaluating and designing future communication technologies, using the LDACS air-to-air data link as a case study, with the goal of ensuring safe and efficient air traffic. From left to right in the photo: Dr. Alexander Hillebrecht (DLR Institute of Air Transport), Prof. Volker Gollnick (Hamburg University of Technology), Dr. Corinna Schmitt (University of the Bundeswehr Munich), and Prof. Christian Lüthje (Hamburg University of Technology).
Successful PhD on the assessment of innovative communication technologies in aviation
Simulation of the interaction between technology and application
Networked communication in oceanic airspace
Advancing Modern Communication Solutions for Aviation
Modern air traffic management systems form the foundation for safe, efficient, and climate-compatible air travel. Alongside established procedures, innovative technologies – such as those enabling communication between airspace users – play a central role. As global air traffic continues to grow, more powerful and flexible communication solutions are in increasing demand.
Exploring a Forward-Looking Data Link Technology
In his dissertation titled “Benefit Analysis of Novel Datalink Technology in the Air Transport System”, Dr. Alexander Hillebrecht analysed the advantages and potential applications of an innovative air-to-air data link based on the L-band Digital Aeronautical Communications System (LDACS). This system enables ad hoc communication networks between aircraft and could significantly enhance information exchange in areas with limited ground infrastructure – such as over oceans – thereby improving both flight safety and the efficiency of air traffic management and operations.
Methodology for Benefit Assessment and Technical Analysis
At the heart of the thesis is a systematic methodology for assessing the operational benefits of such technologies from a technical and functional perspective. Key technical parameters – such as communication range and data rate – were identified and evaluated in the context of real-world aviation communication scenarios. Using a case study of oceanic airspace based on real-world conditions, Dr. Hillebrecht simulated the deployment of the technology and analysed its impact on the overall system.
Practice-Oriented Results
The findings demonstrate that ad hoc communication networks hold great potential for improving aeronautical data communication – provided that certain technical criteria are met. The developed methodology is not only applicable to the specific technology investigated but also offers a transferable framework for evaluating future operational technologies in aviation.
We warmly congratulate Dr. Alexander Hillebrecht on the successful defence of his PhD and on his significant contribution to advancing communication technologies in the air transport system!
