Development of Terrestrial Radio Navigation System of R.O.K for Maritime PNT

Abstract

This paper consists of two main topics which are a results of eLoran testbed and status of R-Mode testbed development. First, a summary of eLoran testbed implementation and a test results under vessel at sea are presented. The performance evaluation results show the eLoran service can provide the within 20 m positioning accuracy. GNSS interference test results are also presented. A jamming and spoofing signal was considered during the test. The results show eLoran can provide safe PNT service without any affect by GNSS interference. Next, Korean R-Mode testbed system architecture and implementation results are presented. Korean R-Mode system considers MF DGNSS and VDES signal as a source to implement it. A differential R-Mode station for generating correction information and Integrity monitoring station are key component of Korean R-Mode.