Eurofix: GNSS Augmented Loran-C & Loran-C Augmented GNSS

Durk van Willigen, Edward Breeuwer, Gerard Offermans, Jos Weber, Jan Andersen

Abstract:	Sole DGNSS concepts loose some availability and continuity-of-service performance due to the risk of failmes of the added system components. Eurofix is a hybridization of DGNSS and calibrated Loran-C which offer soft degradation capabilities which in turn improve availability and continuity of service. The DGNSS data are broadcast by additionally time modulating the Loran-C pulses. The high Loran-C cross-rate interference is counteracted by efficient modulation and coding techniques. The paper describes the soft degradation concept of Eurofix and discusses two different types of coding schemes. Real- life measurements show that cross-rate is the dominant source of interference. Demonstrations of Eurofix, carried out by DOT and Megapulse, show that tinal accuracies of better than 10 meters can be obtained throughout the continental US.
Published in:	Proceedings of the 1995 National Technical Meeting of The Institute of Navigation January 18 - 20, 1995 Disneyland Hotel Anaheim, CA
Pages:	337 - 344
Cite this article:	van Willigen, Durk, Breeuwer, Edward, Offermans, Gerard, Weber, Jos, Andersen, Jan, "Eurofix: GNSS Augmented Loran-C & Loran-C Augmented GNSS," Proceedings of the 1995 National Technical Meeting of The Institute of Navigation, Anaheim, CA, January 1995, pp. 337-344.
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