Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Aircraft guidance
Patent
1988-08-19
1994-08-23
Gregory, Bernarr E.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Aircraft guidance
342 52, 342 55, 342 62, 244 315, 244 316, 244 317, G01S 1366, G06F 1550
Patent
active
053411439
ABSTRACT:
Method and apparatus for guiding a projectile to a target in a scene using a scene imaging sensor in which the projectile has a guidance and control system for aiming the projectile. A first tracker analyzes the scene and selects a first track point representative of a target and a first confidence value serving as a reliability measure of the first selected track point. A second tracker analyzes the scene and selects a second track point representing the target and a second confidence value which serves as a reliability measure of the second selected track point. Each of said trackers are constructed and arranged to operate independently in a manner that is substantially statistically uncorrelated with respect to each other. A joint confidence value based on track point proximity, convergence and divergence is generated from the tracker data and a composite confidence index is calculated from the first and second confidence values and the joint confidence value. The first and second track points are linearly combined pursuant to one of a set of rules selected by the confidence index to provide a new track point which is outputted to the projectile guidance and control system and new start track points are generated that are specially suited to restart the trackers in a new operation cycle.
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Garber David D.
Luk Anthony L.
Reis James J.
Anderson Terry J.
Block Robert B.
Gregory Bernarr E.
Hoch Jr. Karl J.
Northrop Grumman Corporation
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