DGPS/DGNSS

Differential GPS/GNSS encompasses a series of techniques that improves the relative accuracy of GNSS by referencing to a single or network of stations. In its most common form a fixed reference station broadcasts the difference between the measured satellite pseudorange and the calculated pseudorange. These differences or corrections are applied to the rover receiver pseudoranges to calculate a more accurate position. Accuracies at the decimeter level can be achieved.