Active imaging system using time programmed dwell

Details Active imaging system using time programmed dwell Active imaging system using time programmed dwell

1977-06-21

1978-12-12

Willis, Davis L.

Radiant energy

Infrared-to-visible imaging

Including image tube-type detector

250341, H01J 3149

Patent

active

041297806

ABSTRACT:
An imaging system for detection of a target is provided which compensates for range dependency of a reflected interrogating signal. The imaging system includes an electromagnetic radiation source for generating a series of interrogating pulse signals directed towards the target. A receiver is provided and operable to be triggered for receiving during preselected time intervals the reflected interrogating pulse signals from the target and for generating a resultant output signal. The system further includes circuitry connected for triggering the receiver to receive reflected interrogating pulse signals according to a predetermined time function. The number of reflected interrogating pulse signals thus received by the receiver is dependent on the distance between the receiver and the target. The receiver thus generates a resultant output signal to provide a signal of constant amplitude independent of the distance between the receiver and target.

REFERENCES:
patent: 3774043 (1973-11-01), LeCarvennec
patent: 4063093 (1977-12-01), Astheimer et al.

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