Regional positioning system using turksat satellites

A Regional positioning system using three geosynchronous Turksat satellites is investigated in this paper. In this system, a time code signal sent from an earth station to three geostationary satellites is received by a user on Earth. Time delay differences from three satellites are measured by the user and are used to calculate the user´s position. The user´s location information includes latitude and longitude coordinates. It is assumed that the user´s altitude is measured by an altimeter.