DGPS (Differential GPS)

Differential GPS (DGPS) is an advanced version of the standard Global Positioning System (GPS) that improves location accuracy. While regular GPS can have errors of several meters, DGPS uses a network of fixed ground-based reference stations. These stations compare their known locations with GPS signals and calculate corrections for any discrepancies. By broadcasting these corrections to nearby GPS receivers, DGPS can achieve accuracy within a meter or less. This technology is widely used in various fields, including agriculture, maritime navigation, and surveying, where precise positioning is essential.