DGNSS (Differential GPS)

DGNSS, or Differential Global Positioning System, improves the accuracy of standard GPS signals by using a network of ground-based reference stations. These stations know their exact position and compare their known location with the GPS signals they receive, detecting errors caused by atmospheric conditions or satellite issues. They then transmit correction data to nearby GPS receivers, which apply these corrections to enhance their positioning accuracy. This process allows DGNSS to provide highly precise location information, often within a few centimeters to meters, making it valuable for applications like surveying, navigation, and precision agriculture.