Global Navigation Satellite Systems (GNSS) are already a very important part of aeronautical navigation today and are the fundament of future navigation concepts. With their global coverage and the ability to provide integrity (with and without augmentation systems) they are among the key enablers for advanced air traffic management (ATM) concepts, ensuring that the fast increasing volume of air traffic can be handled efficiently also in the future.
The Augmentation Systems group is conducting research related to different augmentation systems including the Ground Based Augmentation System (GBAS), the Space Based Augmentation Systems (SBAS) and the Advanced Receiver Autonomous Integrity Monitoring (ARAIM) with the focus on aviation sector. The goal is to investigate error sources that can impact the user position, to design integrity monitoring algorithms and develop techniques to detect, mitigate or exclude a faulty element of the system, which could lead to an unacceptable error in the navigation solution.
Our group operates its own GBAS test bed, is regularly conducting flight trials and is actively supporting standardization at institutions such as Eurocae, RTCA and ICAO.
The focus topics include:
Integrity of the systems including all their components The areas of interest include the satellite hardware, the navigation signals, user antennas, as well as the receiver and error propagation through all these components.
Development of new navigation techniques and services A special focus is put on the development of dual-frequency and multi-constellation techniques and the respective integrity concepts. The use of a second frequency and multiple constellations can solve the existing ionospheric issues of the single frequency systems, but yields to different error sources that need to be taken into account.
Ionospheric aspects Ionospheric disturbances remain an issue for aviation because they may degrade the accuracy, reliability and availability of the GNSS systems used to navigate. Therefore a thorough understanding of the processes is developed for appropriate threat modelling and threat mitigation by advanced techniques and leveraging of different monitoring networks.
Future air traffic management in urban airspace The areas of interest include the use of the existing concepts to applications of unmanned aerial vehicles (UAVs) and definition the requirements needed. Concepts of differential navigation are combined with other methods in order to meet the demanding requirements in terms of cost, weight and reliability. The goal is to ensure safety of the increased use of small and medium-sized aircraft in urban airspace in the future. The experience gained in aviation can be extended also to other safety of life applications.
Your consent to the storage of data ('cookies') is required for the playback of this video on Youtube.com. You can view and change your current data storage settings at any time under privacy.
GBAS - das Landesystem der Zukunft
Das Ground Based Augmentation System (GBAS) ist ein Landesystem für Flugzeuge, welches auf Satellitennavigation basiert. Es ist an ersten Flughäfen (z.B. in Frankfurt, Zürich, Sydney und Newark) bereits heute im Einsatz und ermöglicht dort Präzisionsanflüge unter CAT-I Wetterbedingungen (gewisse Mindestsicht ist vorhanden).
Image: 1/5, Credit:
DLR
Ground Based Augmentation System (GBAS) - Flugtests mit ATRA
Das DLR-Forschungsflugzeug A320 ATRA bei der Landung.
Flugversuche mit Drohnen im Projekt City-ATM, mit dem das DLR zusammen mit externen Partnern ein dichtebasiertes Luftraummanagementkonzept demonstriert. Es bietet die Grundlage, um die unterschiedlichsten Luftfahrzeuge optimal im Luftraum zu nutzen.
