05072396 is referenced by 52 patents and cites 8 patents.

An aircraft navigation system has a digital map store of terrain features or man-made features in the region over which the aircraft is flying. Infra-red television cameras view the surrounding of the aircraft. Their outputs are supplied to processors in which the camera outputs are compared with a library of features transformed according to the camera viewing angle. Information about those features identified is supplied to a correlator which correlates the features against the map store to identify their location in the map and estimates the aircraft position as an output to a navigation computer. The system also indicates aircraft attitude which may be independent of known-features, from observation of the horizon. Position information can also be provided by dead reckoning from a known initial position by monitoring the change in positional relationship of a feature from the initial position to that at a later position.

Title
Navigation systems
Application Number
7/607460
Publication Number
5072396
Application Date
October 31, 1990
Publication Date
December 10, 1991
Inventor
Keith C Rawlings
Cheltenham
GB
Roger S Fitzpatrick
Cheltenham
GB
Agent
Pollock VandeSande and Priddy
Assignee
Smiths Industries Public Company
GB
IPC
G06F 15/50
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