Target detector

Details Target detector Target detector

1966-05-03

1990-12-11

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

367126, G01S 380

Patent

active

049775456

ABSTRACT:
A radiant energy detector having a pair of receiving transducers, a pair of ariable gain amplifiers connected to said transducers for amplifying the outputs thereof different amounts, a subtract circuit for producing a signal representing the difference of said amplifier gains, a Schmitt trigger which is triggered by said difference signal whenever it exceeds a predetermined value, and an And gate connected to the outputs of said pair of amplifiers and the output of said Schmitt trigger for producing a utilization signal whenever all thereof occurs simultaneously.

REFERENCES:
patent: 2524180 (1950-10-01), Schuck
patent: 2942258 (1960-06-01), Priest
patent: 2987700 (1961-06-01), Hawkins
patent: 2994080 (1961-07-01), Varela
patent: 3024441 (1962-03-01), Saxton
patent: 3097356 (1963-07-01), Ruisinger
patent: 3178679 (1965-04-01), Wilkinson

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