DGPS - differential global positioning system, DGPS (Differential GPS) - a form of GPS in which the reliability and accuracy are enhanced by broadcasting a time-varying correction message from a GPS monitoring receiver (Differential Mode) at a a known position on shore. The corrections are fed automatically to the GPS receiver on board and used to compute an improved position., DGPS - diferentsiaalne ülemaailmne kohamääramise satelliitsüsteem