The RTK survey (Real Time Kinematic) is a method of geodesy for surveying or staking out points with the help of satellite navigation systems such as GPS, GLONASS or Galileo future. In this case an accuracy of 1 to 2 cm can be achieved. The coordinates of the points can be calculated according to the initialization in real time. (We recommend at least six satellites) prerequisite is an undisturbed reception of signals from at least five GPS satellites. It needed a total of at least two GPS antennas. The first is the reference station, the second of the so-called Rover, whose position is determined by three-dimensional polar Annexes to the reference station after the so-called baseline method.