Navigation systems

Boots – shoes – and leggings

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Details

364449, 358103, G06F 1550

Patent

active

050723960

ABSTRACT:
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.

REFERENCES:
patent: 4700307 (1987-10-01), Mons et al.
patent: 4937751 (1990-06-01), Nimura et al.
patent: 4939662 (1990-07-01), Nimura et al.
patent: 4942533 (1990-07-01), Kakinami et al.
IEEE Trans. Veh. Tech, vol. VT-26-No. 1 (2/77), pp. 47-59, "A Dead-Reckoning/Map Correlation System for Automatic Vehicle Tracking", Lezniak et al.

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