Patent ID: 8265803

Claim:
A system for enhancing the visibility and ensuring the correctness of terrain information on a visual display onboard an aircraft, comprising: a database having a set of terrain data stored therein; a position data source to produce a set of spatial position data; and a processing unit coupled to the database and the position data source to: receive at least one of a current position, heading and speed of the aircraft; load a patch of terrain data, the patch of terrain data corresponding to a first region, the first region being based on at least one of the current position, heading and speed of the aircraft, and the patch of terrain data comprising a subset of the set of terrain data; identify a priority region within the first region; retrieve a subset of the set of spatial position data corresponding to the priority region from the position data source; compare an accuracy value for a subset of the patch of terrain data corresponding to the priority region with an accuracy value for the subset of the set of spatial position data corresponding to the priority region; and augment the subset of the patch of terrain data corresponding to the priority region with the subset of the set of spatial position data corresponding to the priority region when the subset of the set of spatial position data is more accurate than the patch of terrain data.