Method for improving a virtual representation of an aerodrome and display system implementing said method

This method consists in: obtaining the positions of the thresholds of the runways of the aerodrome; a runway model being a polygonal modeling of the runways, associating each runway with polygons, a portion common to two secant runways being represented by polygons common to the modelizations of the two secant runways; determining a correction plane of a terrain model located below the thresholds of the runways; defining a contour area around the runway model, based on the runway model and the correction plane; correcting a terrain model so that any point outside the contour area is projected onto the correction plane and any point within the contour area is projected onto the contour area; combining the corrected field model and the runway model to obtain an improved virtual representation.