Research focus of the group is positioning of mobile devices/users using radio signals, which besides GNSS comprise terrestrial cellular mobile communications systems and other dedicated wireless communications systems. The emphasis is on the integration of those different positioning technologies. In particular, methods are developed which exploit multipath propagation specifically for positioning. Furthermore, algorithms for cooperative positioning are designed. Such approaches are of high relevance for both mobile radio positioning and swarm navigation.
A further area of research is the characterization of electromagnetic wave propagation for communication and navigation. Extensive measurements are the basis for building suitable channel models for a variety of environments. These comprise models for terrestrial and maritime environments as well as channel models for aeronautical communication and satellite navigation. A detailed understanding of signal propagation properties is essential for design and development of new communications and navigation technology working in those environments. On this basis, the Mobile Radio Transmission group develops technologies for future maritime digital communication systems in the VHF and C-band.
Research topics of the Mobile Radio Transmission group include