3D Navigation Aid System and Display for Same

An aircraft navigational aid system designed to display an area of hazardous obstructions within a three-dimensional representation of the obstructions comprising an anti-collision device, means for storing data representing obstructions, means for calculating a representation of the obstructions in a three-dimensional space and a device for displaying the obstruction data in three dimensions, the anti-collision device being designed to detect, within an area being monitored, an area of obstructions hazardous for collisions inside a current protection envelope for the aircraft, further comprising:

• means for calculating the horizontal dimension, the vertical dimension of the said area of hazardous obstructions and the localization of the point in the area of hazardous obstructions closest to the aircraft;
• and
• means for augmenting the display of the area of hazardous obstructions with at least two indicator objects for the said area of hazardous obstructions, a first object indicating the horizontal dimension and a second object indicating the vertical dimension of the said area of hazardous obstructions, the first and the second object being disposed together in such a manner as to form a third object targeting the localization of the point in the area of hazardous obstructions closest to the aircraft.