Integrating DGNSS and CNS for Seamless Gate-To-Gate Services. System Concept and Results from Approach and Landing Trials

Gunnar Frisk, Bengt Moberg, Tim Katanik

Abstract:	European countries have together with the European Commission (EC) and industry over the last years in-vested heavily in the development, test, evaluation and standardization of a system capable of supporting time-critical Communication, Navigation and Surveillance (CNS) applications including Differential GNSS (DGNSS). The system known as VDL Mode 4 and asso-ciated operational concept forms a system solution for: · all elements in the International Civil Aviation Or-ganization (ICAO) CNS/ATM concept; · all phases of flight (gate-to-gate); · all user groups; · all over the globe implementation. This paper will first give a background and general over-view of the system and its’ concept. The support for CNS applications will be discussed followed by a more in-depth discussion of one application and one of the trials conducted, for approach and landing using DGNSS and Automatic Dependant Surveillance Broadcast (ADS-B) in combination. Both operational and technical aspects will be discussed, both from the aircrew and Air Traffic Con-trol (ATC) point of view. The trials were conducted dur-ing 1998 and 1999 in corporation with Scandinavian Air-lines Systems (SAS) and Swedish Civil Aviation Administration (Swedish CAA), together with industry including Raytheon's Navigation and Landing Systems and Saab Dynamics. The paper will show that it is feasible to combine several CNS services, including DGNSS, in order to achieve the vision stated above, i.e. one system solution for all phases of flight and all user groups. At the end, the paper will discuss the future development of CNS applications and systems including standardization and some implementa-tion aspects.
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	1855 - 1868
Cite this article:	Frisk, Gunnar, Moberg, Bengt, Katanik, Tim, "Integrating DGNSS and CNS for Seamless Gate-To-Gate Services. System Concept and Results from Approach and Landing Trials," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 1855-1868.
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