Time Synchronization and Recovery Using R-Mode

Kurzfassung

Time synchronization is a fundamental requirement for modern maritime navigation, supporting accurate position- ing, operational coordination, and navigational safety. Although Global Navigation Satellite Systems (GNSS) provide the pri- mary source for positioning and timing, their susceptibility to interference, including jamming and spoofing, particularly in regions such as the Baltic Sea, has motivated the development of complementary technologies such as R-Mode. This work presents methods for extracting timing information from Minimum Shift Keying (MSK) signals used within the R-Mode system. It eval- uates the achievable synchronization accuracy and investigates approaches for stabilizing a local clock oscillator using remote atomic clock references in order to maintain a stable and continuously updated time source.