Circuitry for the generation and synchronous detection of optica

Details Circuitry for the generation and synchronous detection of optica Circuitry for the generation and synchronous detection of optica

1980-09-15

1984-04-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250343, 356316, 356326, G01J 300

Patent

active

044423497

ABSTRACT:
Circuitry for the generation and synchronous detection of optical pulsed signals contaminated by additive background noise characterized by a high signal-to-noise ratio. The circuitry comprises a source for generating optical pulsed signals, a detector for generating detector signals in response to the optical pulsed signals, and a signal processor for processing the detector signals in synchronism with the optical pulsed signals. The signal processor for processing the detector signals includes a high pass filter, an integrator and at least one switch synchronized with the optical pulsed signals for driving the integrator. The circuitry is preferably under computer control.

REFERENCES:
patent: 3645629 (1972-02-01), Dagnall
patent: 3678269 (1972-07-01), Malek
patent: 3805074 (1974-04-01), McCormack
patent: 3825344 (1974-07-01), Bonne
patent: 4029957 (1977-06-01), Betz et al.
patent: 4061918 (1977-12-01), Prier et al.

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