Patent ID: 7173545
Filing Date: 2007-02-06
Classification: G01C

Abstract:
1. An aircraft navigation aid method, comprising the steps of: a) defining an area to be sensed to the right and to the left of a first hypothetical path of the aircraft, designated the feeler line support path, b) sensing, for each of the two areas to be sensed to the right and to the left, a corresponding predefined underlying relief, in order to identify dangerous sub-zones to the right and/or to the left, c) computing, for each of the dangerous sub-zones to the right and/or to the left, a time ΔT remaining to begin an avoidance maneuver before a point of no return, and determining for the dangerous sub-zones to the right a minimum ΔT denoted ΔT right and/or for the dangerous sub-zones to the left a minimum ΔT denoted ΔT left, d) establishing a navigation aid from ΔT right and/or ΔT left.