Patent ID: 8149141
Filing Date: 2012-04-03
Classification: G08G

Abstract:
1. A method for updating audio communication frequencies between an aircraft and ATC stations on the ground, the method comprising: generating a flight plan or a current trajectory on board the aircraft followed by the aircraft; dynamically coupling the flight plan or the current trajectory with geometry information of control sectors overflown by the aircraft; determining intersection points of the flight plan with limits of polyhedrons representing the control sectors; determining on board the aircraft or on the ground, position information corresponding to a portion of the flight plan or the current trajectory where a frequency change occurs based on the intersection points; transferring the position information to the aircraft if the position information is determined on the ground; monitoring on board the aircraft, a position of the aircraft relative to the portion of the flight plan or the current trajectory where the frequency change occurs; and displaying of the relative position and warning a pilot of an imminence of when the frequency change occurs, wherein, when sectors are divided or combined, a computer on the ground sends to all the aircraft of a new sector a message (CONTACT [unitname] [frequency]) with the new sector name and the new frequency.