Application and service related work



The main business return of Galileo will be in applications and services. Today, the US has a clear lead in this area. Galileo provides a true added value in some sectors. Some promising ones are being addressed in the Institute: Safety of Life Services and Indoor Navigation.

Safety of Life Services

So far, SoL work was focuses on general aviation (approach using APV-I with Satellite Based Augmentation Systems (SBAS), like WAAS and EGNOS, and landing using CAT-I with Ground Based Augmentation Systems (GBAS) currently developed by Honeywell and Thales). Galileo will offer three benefits with respect to GPS: integrity, an additional Aeronautical Radio Navigation Signal (ARNS) and more satellites. This provides the possibility to include additional approach and landing categories, aiming finally at a satellite navigation based CAT-III landing capability. The focus of the Institute’s work is on demonstrating the practical feasibility of such extensions.

The possibility of jamming the extremely weak satellite navigation signals is a real threat in this context but has not yet been adequately covered. The detection of such interference and the switching over to inertial navigation is the basis for completing an SoL maneuver or at least for returning to a safe state. In this context high jamming resistance and a safe detection of critical jamming with a low alarm rate are key requirements. Both are addressed at the Institute, the latter by the use of adaptive antennas.

Indoor and street canyons

The combination of Galileo and GPS will lead to a constellation with nearly 60 satellites. This will tremendously increase the availability in cities, making a broad coverage by selectively complementing satellite navigation with other standards feasible. The Institute’s experience in both satellite navigation and terrestrial communication is an excellent basis for addressing this opportunity, in particular for finding complementation systems that can easily by implemented in personal phones.
The Institute’s experience in channel measurement and modeling is also a strong asset. It is the basis for determining the limitations of the indoor use of satellite navigation. To this end, the Institute currently plans a high-resolution indoor channel measurement campaign using a Zeppelin.

 


Kontakt
Dr.-Ing.habil. Michael Meurer
Deutsches Zentrum für Luft- und Raumfahrt (DLR)

Institut für Kommunikation und Navigation
, Navigation
Tel: +49 8153 28-3065

Fax: +49 8153 28-2328

E-Mail: Michael.Meurer@dlr.de
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