Analysis of Positioning Performance to Meet HEA Requirement in eLoran Testbed

Abstract

To avoid the damage due to the vulnerability of Global Navigation Satellite System (GNSS) signal to radio frequency interference (RFI), this paper focuses on the positioning performance of Position, Navigation, and Timing (PNT) for maritime service using ground wave based eLoran system in eLoran testbed environment. We review the performance requirements on harbor entrances and approaches (HEA) through the document of the International Maritime Organization (IMO) and the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA), which are issued to provide maritime navigation service. To meet the performance requirement of position accuracy (< 20m), the error component of eLoran signal and the differential method are analyzed. The predicted positioning performance is presented as the simulation based performance coverage in eLoran testbed environment. Finally, we propose the feasibility of maritime PNT service using eLoran testbed.