Which Position Reference System provides a DP system with global positioning coordinates?

The Dynamic Global Navigation Satellite System (DGNSS) is designed to enhance the accuracy of standard GPS positioning data by correcting errors in real-time. It utilizes ground-based reference stations that receive GPS signals and compute corrections due to atmospheric disturbances, satellite orbit errors, and other factors. By broadcasting these corrections, DGNSS provides a highly accurate positioning reference that can significantly enhance the performance of a DP system.

In the context of dynamic positioning systems, having precise global positioning coordinates is essential for maintaining a vessel's position and stability, especially in challenging environmental conditions. DGNSS is capable of providing real-time, accurate horizontal positioning which enables DP systems to maintain precise positioning over long durations, making it a critical component for marine operations.

Other systems mentioned, such as the inertial navigation system, ultra-short baseline systems, and reference beacon systems, serve specific roles in positioning but do not provide global positioning coordinates in the same manner as DGNSS. Inertial navigation systems rely on internal measurements and can drift over time without external corrections. Ultra-short baseline systems are primarily used for underwater positioning and involve measurements between fixed points rather than global coordinates. Reference beacon systems are limited to localized operations and do not offer a global positioning solution.