1. An apparatus for determining a location for an aircraft relative to an area on the ground, the apparatus comprising: an on-board landing system on an aircraft, the on-board landing system configured to identify a location marker on an area of the ground, the location marker configured to convey a unique code to the on-board landing system; wherein the on-board landing system is configured to obtain the unique code from the location marker and use the unique code to determine a location of the aircraft.