TERRAIN MAPPING

摘要

A terrain mapping apparatus (1) carried by an aircraft is arranged to receive height data from a terrain elevation data array memory (7), to determine the correlation between elements of the terrain elevation data array memory (7) and detected height data stored in elements of a laser obstacle detector co-ordinate frame memory (4). The height data of the laser obstacle detector co-ordinate frame memory being provided by a laser obstacle detector (3) monitoring terrain overflown by the aircraft. Updated height data, determined by a mapping processor 5 for each element of the terrain elevation data array memory (7) is provided from height data associated with a predetermined number, typically four, surrounding elements of the laser obstacle detector co-ordinate frame memory (4) and updated height data is then stored in a digital elevation array memory (8).