Rapid response correlation type image motion sensor

Details Rapid response correlation type image motion sensor Rapid response correlation type image motion sensor

1974-10-25

1976-03-02

Borchelt, Archie R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

178 68, H01J 3912

Patent

active

039420221

ABSTRACT:
An improved system for detecting movement of an image formed by a reconnaissance optical system. A photodiode array is placed in the focal plane of the optical system to detect the image. The photodiode array is first read out at a time T into a shift register where the signal is stored. After passage of a time .DELTA.T the photodiode array is read out a second time. The first and second read out signals are then correlated to determine the amount of movement of the image between times T and T + .DELTA.T.

REFERENCES:
patent: 3507992 (1970-04-01), Foote
patent: 3603729 (1971-09-01), Sperber
patent: 3740466 (1973-06-01), Marshall et al.
patent: 3823261 (1974-07-01), Bolsey
patent: 3836710 (1974-09-01), Takahashi
patent: 3851096 (1974-11-01), Collins et al.

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