1. A position tracking system comprising: a positioning unit associated with a mobile object for providing first position data of the mobile object enabling providing a first real time trajectory indicating movement of the object; a data storage unit for storing the first position data; a navigation processing module for generating calibrated second trajectory data from the first position data; and an error correction computation module for comparing the second calibrated trajectory data from the navigation processing module with the first trajectory data and generating correction data indicating corrections in the first position data.