Method And System For Assisting In The Avoidance Of An Incursion Onto A Runway By An Aircraft Taxiing On An Airfield

A method for assisting in the avoidance of an incursion onto a runway of an airfield by an aircraft taxiing on the airfield, said method comprising:

• a surveillance step (E1), implemented by a surveillance unit, at least to survey the airfield so as to be able to detect, via an optical detection, one or more characteristic elements comprising a mandatory characteristic element corresponding to a stop marking on the ground, said characteristic element or elements relating to a taxi-holding position of a runway of the airfield, to determine a current relative position of the aircraft with respect to a taxi-holding position for which at least the mandatory characteristic element has been detected, and to detect, if appropriate, a future entry onto said runway of the airfield by the aircraft based at least on the current relative position and on parameters of the aircraft, the surveillance step (E1) comprising a data processing step (E1B) implemented at least to determine at least one current alert envelope corresponding to a so-called incursion time, and depending at least on said current relative position of the aircraft and said parameters of the aircraft, and to detect a future entry onto a runway if the current alert envelope reaches a taxi-holding position for which at least the mandatory characteristic element has been detected;
• a data reception step (E2), implemented by a data reception unit, at least to receive at least one clearance to enter onto a runway;
• a verification step (E3), implemented by a verification unit, at least, in case of detection in the surveillance step (E1) of a future entry onto the runway, to verify if the future entry is cleared or not cleared, by taking into account the entry clearance or clearances received, if appropriate, in the data reception step (E2), and to deduce, if the future entry is not cleared, a future incursion;
• and
• an avoidance assistance step (E4), implemented by at least one avoidance assistance unit, at least, in the case of a future incursion deduced in the verification step (E3), to implement at least one action intended to assist in avoiding said future incursion.