Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1985-12-05
1987-12-08
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356152, G01B 1126
Patent
active
047119985
ABSTRACT:
A direction finding system for infrared radiation includes a set of three detectors uniformly positioned in an XY plane about the Z axis of a cartesian coordinate system with individual ones of the detectors having radiation detection surfaces being normal to the Z axis. A set of three mirrors have front and back reflecting surfaces which are parallel to the Z axis, the mirrors being uniformly distributed among the detectors. Signals of the detectors have magnitudes dependent on the sum of direct radiation and radiation reflected by adjoining mirrors. The detector signals are fed into computer storage to permit computation of the direction of a source of radiant energy relative to the Z axis based on a ratio of magnitudes of the signals of the detectors.
REFERENCES:
patent: 3224709 (1965-12-01), Blizard
patent: 3293440 (1966-12-01), Mueller
Karambelas A. W.
Santa Barbara Research Center
Taylor Ronald L.
Westin Edward P.
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