Differential system

From International Dictionary of Marine Aids to Navigation
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An augmentation system whereby radio-navigation signals are monitored at a known position and the corrections so determined are transmitted to users in the coverage area.

DGPS: Differential Global Positioning System

Source: Nick Ward, Vicechair, IALA e-Nav Committee, March 2009

Differential Global Positioning System

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM