The RBN-DGNSS, as a safeguard facility to support the navigation of ships, has been shut down by some countries, while the stations in China have been upgraded and can integrate and broadcast Beidou differential signals. This article analyzes the specific reasons and countermeasures for shutting down radio beacon differential stations in a few countries, as well as the guidance opinions of IMO and IALA on the development of RBN-DGNSS. Combined with the new characteristics of China's RBN-DGNSS differential station after upgrading and transformation, this paper evaluates the risks of shutting down the existing RBN differential station to China's maritime location service, user usage, international compliance and other aspects, and draws a conclusion that it is not appropriate for China to shut down the differential station completely at the present stage. Suggestions on future development trends of China's RBN-DGNSS combined with Beidou Satellite Based Augmentation System(BDSBAS) and other technological development trends, to provide reference for the development and transformation of RBN-DGNSS in relevant countries in the world.
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