Terrestrial light beam communication system

Details Terrestrial light beam communication system Terrestrial light beam communication system

1982-07-16

1985-01-01

Orsino, Jr., Joseph A.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455601, H04B 900

Patent

active

044919824

ABSTRACT:
A terrestrial light beam communication system is described for compatible utilization with existing radio transmission systems. The transmitter (FIG. 4) utilizes aiming means (41 and 42) to control the aim of the transmitted light beam. The receiver employs an array of detectors (FIG. 5) from which a circuit (FIG. 6) determines the position of the received light beam. The position of the received light beam is used to control the position of the transmitted light beam from which control signals are developed to maintain the aim of the transmitted light beam to combat the occurrence of ongoing fluctuations in the vertical deflection experienced by the transmitted light beam.

REFERENCES:
patent: 2982859 (1961-05-01), Steinbrecher
patent: 3504182 (1970-03-01), Pizzurro et al.
patent: 3566126 (1971-02-01), Lang et al.
patent: 4291977 (1981-09-01), Erdmann et al.

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