Applying CPR algorithm in transmitting and receiving aircraft’s three-dimensional coordinates in secondary radars

Nowadays, the increasing demand of air transportation creates heavy air traffic. In order to properly control the aircraft and airborne collision avoidance, the parameters of the aircraft must be extracted. A very useful tool in this regard is secondary surveillance radar. This radar not only be able to identify friend or foe aircrafts but also can extracts characteristics of aircrafts which are in the control path. These parameters include latitude , longitude and height of the aircraft that are used for air traffic control. In this paper we described how to code and decode longitude, latitude and altitude and simulate sending and receiving a three-dimensional coordinate of aircraft by using CPR algorithm in order to detect its position.