Expansion of the LF/MF Radiobeacon DGPS System: A Public Safety Backbone

James A. Arnold

Abstract:	The US Department of Transportation (USDOT) is considering expanding the US Coast Guard Differential Local Area Global Positioning System (LADGPS) network into the Nationwide DGPS (NDGPS) service to meet the public safety requirements of Federal, State, and local government surface users. This paper explores the history behind this expansion concept from the initial concept of reducing the proliferation of government augmentation systems through the current decision making process in the USDOT. Included are highlights from various reports on GPS and its augmentations that have been published by groups such as the National Research Council and the US Department of Transportation. The technical characteristics and coverage area of the US Coast Guard LADGPS service are presented. This is followed by the current implementation plan that has been developed along with a brief description of some existing infrastructure that could be used to implement the expanded LADGPS service. Most importantly, some of the host of public safety functions which could be enhanced by this service are described. This list of applications and the agencies that will apply them is expanding rapidly.
Published in:	Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997) June 30 - 2, 1997 Albuquerque, NM
Pages:	515 - 522
Cite this article:	Arnold, James A., "Expansion of the LF/MF Radiobeacon DGPS System: A Public Safety Backbone," Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997), Albuquerque, NM, June 1997, pp. 515-522.
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