Another main topic is to expedite the global networking of aeronautical data link systems to realize the DLR vision of “networking the sky”. The envisaged global aeronautical network covers not only ATC/ATM but also airline communications (Airline Operational Communication, AOC; Airline Administrative Communication, AAC) and communications for the cabin (Airline Passenger Communication, APC). The work within this topic comprises ad-hoc routing concepts as well as protocol design and validation for IP(v6) based aeronautical networks. Especially, design and optimization in the areas routing, mobility, and security are performed.
In addition, the research group acts as advisor of the BMVBW and the German ATC provider DFS within the Aeronautical Communications Panel (ACP) which is the standardization body of ICAO for aeronautical communications.
Current Research Topics
Choice of Recently Finalized Projects
Successful Demonstration of B-VHF[September 2006]An OFDM based overlay system for aeronautical communications in the VHF-band has been developed and implemented in a demonstrator system within the EU-Project B-VHF. The successful demonstration of B-VHF for Eurocontrol has triggered the follow-up activities on B-AMC (Broadband Aeronautical Multi-carrier Communications System) – see below.
Propagation Channel Measurements at Munich Airport[November 2007]A measurement campaign at C-band (5 GHz) was carried out at Munich airport to determine the propagation channel conditions between aircraft on the surface and the control tower within a typical airport environment. Based on the obtained results a channel model for simulations of future airport data link technologies has been developed. Since the World Radio Conference (WRC) 2007, the C-band (5091-5150 MHz) is assigned to airport communications.
Adaption of B-VHF to L-band Use – B-AMC Project[February 2008]Under Eurocontrol contract, the B-VHF concept has been further developed to enable L-band deployment. Within this task, special attention has been given to the interference situation in L-band. As a result, B-AMC is designed as an inlay system capable of being deployed in between successive channels of existing radio navigation systems.
ICAO ACP Recommendation on B-AMC[April 2008]The Aeronautical Communications Panel (ACP) of ICAO has recommended the further development of B-AMC as future air/ground communications system within the Future Communications Infrastructure. Based on B-AMC, a future air/ground communications system (L-Band Digital Aeronautical Communications System Type 1, L-DACS1) shall be developed also taking into account preferable characteristics of P34 and WiMAX.
Specification of L-DACS1[February/March 2009]Under Eurocontrol contract, a specification for L-DACS1 has been developed. This specification currently serves as starting point for further L-DACS1 developments within the SESAR Joint Undertaking.
Simulation Framework for Aeronautical Communications[June 2009]Within the DLR-Project FACTS (Future Aeronautical Communications Traffic Simulator) a simulation framework for aeronautical communications has been developed and tested. FACTS allows to realistically simulate the communications traffic within a certain area based on real flight data. Using FACTS, existing and future aeronautical communications systems can be evaluated under operational conditions.
Demonstration of DLR-Vision „Networking the Sky“[September 2009]At the end of the EU-Project NEWSKY (NEtWorking the SKY for Aeronautical Communications) which was initiated and lead by DLR, a project demonstration was presented to the public. The demonstration successfully proved the NEWSKY concept and its possibility for implementation.