DLR - Institute of Communications and Navigation

Selected Projects

	Alert 4 All (A4A) The Alert4All Project, coordinated by DLR, is a EU-funded collaborative project in the frame of the 3rd REA Security Call that develops an advanced concept for alert and communications towards the population in crisis situations from a European perspective.
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LDACS-NAV

To meet the challenges of future Air-Traffic Management (ATM), aeronautical communication and navigation technologies are currently modernized. In communications, the air-ground communications standard LDACS (L-band Digital Aeronautical Communications System) is under development. The main goal of the DLR internal project LDACS-NAV (LDACS Navigation) is to advance the LDACS technology candidate LDACS1 to include navigation functionality. The feasibility of this approach is proved by in-flight measurements.

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GeReLEO

Low-Earth-orbit (LEO) satellites require both data links for telemetry, tracking and command (TT&C) and for download of mission data (e.g., Earth observation). A single ground station can maintain a contact to a passing LEO satellite for relatively short time only (typically ~10 min), and together with high-resolution sensor systems onboard the satellites producing high amounts of data this leads to a serious bottleneck. In fact, depending on the actual orbit parameters (altitude and inclination) the long-term average visibility as seen from one ground station is only 1% to 6% of the overall orbit time.

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PiLoNav

Precise and integer Localisation and Navigation in Rail and Inlandwater Traffic. Mobility of people and transport of goods are important for a smoothly functioned society. These also significantly affect the quality of living and the competiveness of the economic system. Railway and inland water transportation become more important particularly with regard to current ecological and economical matters.

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SANDRA - Seamless Aeronautical Networking through integration of Data links Radios and Antennas

The overall air transportation sector is currently under significant stress. With the demand in aircraft operations expected at least to double by the 2025 timeframe, there are well-founded concerns that current air transportation systems will not be able to accommodate this growth. Existing systems are unable to process and provide flight information in real time, and current processes and procedures do not provide the flexibility needed to meet the growing demand.

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	TOPGAL Total Performance System for GBAS based Automatic Landings. TOPGAL is an internal DLR project which investigates GBAS based navigation in conjunction with flight management and autopilot systems. A socalled Ground Based Augmentation System enables aircraft to use satellite navigation for guidance on a precision approach.
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	WHERE The main objective of WHERE is to combine wireless communications and navigation for the benefit of future mobile radio systems. The impact will be manifold, such as real time localization knowledge in B3G/4G systems which increase the cellular capacity.
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Alert 4 All (A4A)

LDACS-NAV

GeReLEO

PiLoNav

SANDRA - Seamless Aeronautical Networking through integration of Data links Radios and Antennas

TOPGAL

WHERE