Real-time adaptive thermal reference control for night vision sy

Details Real-time adaptive thermal reference control for night vision sy Real-time adaptive thermal reference control for night vision sy

1997-07-16

1999-07-06

Hannaher, Constantine

Radiant energy

Calibration or standardization methods

250332, G01J 548

Patent

active

059200669

ABSTRACT:
A system for normalizing an infrared detector has two control loops, each of which includes a thermal source and a command system. Each command system controls the temperature of the associated thermal source. Each command system includes an error signal source for providing an error signal indicative of the difference between a commanded temperature for the thermal source and an actual temperature at the thermal source, and includes a compensator coupled between the error signal source and the thermal source. Each compensator includes a first inverse compensation circuit responsive to the error signal for providing an output, a bandwidth maximizing compensation circuit responsive to the output of the first inverse compensation circuit, and a second inverse compensation circuit responsive to an output of the bandwidth maximizing compensation circuit. The thermal source is responsive to the output of the second inverse compensation circuit.

REFERENCES:
patent: 5534695 (1996-07-01), Miyoshi et al.
patent: 5763882 (1998-06-01), Klapper et al.

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