Contact-analog headup display method and apparatus.

IMAGES ARE PROVIDED TO AN AIRCRAFT PILOT FLYING OVER THE EARTH THROUGH A HELMET-BASED VISUAL REPRESENTATION SYSTEM. THE POSITION AND ATTITUDE OF THE AIRCRAFT WITH RESPECT TO THE EARTH AND THE ATTITUDE OF THE HULL WITH RESPECT TO THE AIRCRAFT ARE CONTROLLED IN ORDER TO CONVERT A PLURALITY OF EARTH POSITION SIGNALS STORED IN HULL COORDINATES. THE POINTS OF THE EARTH THAT ARE VISIBLE BY THE PILOT ARE VISUALLY REPRESENTED USING SYMBOLIC IMAGES SO THAT THESE COINCIDE FROM THE POINT OF VIEW OF THE PILOT WITH THE REAL POSITIONS OF THE VISIBLE POINTS OF THE EARTH.