Patent ID: 8983689
Filing Date: 2015-03-17
Classification: G01C,G05D,G08G

Abstract:
1. A method for assisting in navigation of an aircraft, the aircraft comprising at least one processor and at least one display, the method comprising: calculating and displaying a linear deviation for the aircraft in an approach phase towards an arrival airport on a linear section, the linear deviation representing a distance separating an estimated position of the aircraft and a desired position on a target trajectory, the linear deviation expressed by a lateral component and a vertical component; calculating and displaying an angular deviation for the aircraft in the approach phase towards the arrival airport on an angular section, the angular deviation representing an angle formed at a touchdown point situated in proximity to a landing runway threshold located between a target trajectory and a straight line joining the touchdown point to the estimated position of the aircraft, the angular deviation expressed by a lateral component and a vertical component; calculating an anticipated deviation of the aircraft, expressed linearly or angularly, projected to a reaction time of the aircraft; calculating a error distribution associated with the anticipated deviation; calculating a probability of exceeding a predetermined target deviation based on the anticipated deviation and the error distribution; and comparing the probability to a predetermined threshold.