ABSTRACT
In order to assess how measurement time affects the accuracy of horizontal position determination in GPS and GPS/EGNOS systems, more than thirty measurement sessions were performed. Observations during each session lasted at least 24 hours.The tests were carried out with two identical MiniMAX receivers made by CSI. The use of two receivers of the same type (with the same software) was aimed at eliminating possible errors that otherwise result from measuring instruments of various types. The GPS antennas were mounted on the antenna platform of the Maritime University of Szczecin. The antennas’ positions were determined by geodetic methods.
