Patent ID: 8249762

Claim:
A method to monitor an obstruction for an aircraft having a monitoring device, the method comprising the steps of: measuring location and identification parameters to locate and to identify the obstruction; calculating identification parameters to calculate a location and a dimension of the obstruction, a direction and a speed of the obstruction, a distance between the aircraft and the obstruction, and a variation in the distance between the aircraft and the obstruction; and generating audible and visual alerts to describe the location, a displacement and a criticality of the obstruction with respect to the aircraft, by calculation of an aircraft risk zone and an obstruction risk zone, wherein the aircraft risk zone comprises a volume disposed at a location corresponding to an anticipated location of a predetermined part of the aircraft, and the obstruction risk zone is located at a position of the obstruction and comprises the dimensions of the obstruction increased by a volume whose dimensions are dependent on a speed of approach of the obstruction and an anticipation time, and the audible and visual alerts are triggered when the obstruction risk zone penetrates the aircraft risk zone.