MOBILE TARGET WITH IMPROVED ABSOLUTE POSITION AND ORIENTATION DETERMINATION

The present invention relates to a mobile target 1, provided to be aimed at and tracked by a geodetic measuring instrument 12, so that an actual absolute position 16 of the mobile target 1 is determinable related to an absolute position of the geodetic measuring instrument 12. The mobile target 1 is configured to be arranged on a motion unit 11, the motion unit 11 being provided to move through an environment 14. The mobile target 1 comprises a reflecting element 2, an inertial measurement unit (IMU) 3, a receiving unit 4, configured to receive first position data sent by the geodetic measuring instrument 12 with regard to the actual absolute position 16 of the mobile target 1, a computing unit 5, configured to continuously determine an actual relative position 15 and orientation of the mobile target 1 in the environment 14 based on the IMU data, wherein the actual absolute position 16 based on the first position data is used as a drift-corrector, and a data and/or power interface 6, configured to interact for data and/or power transmission with a corresponding data and/or power interface of the motion unit 11. Further, a housing 7 of the mobile target 1 comprises the reflective element 2, the IMU 3, the receiving unit 4, the computing unit 5 and the data and/or power interface 6.