Transmission system of aerial ultrasonic pulse and ultrasonic tr

Details Transmission system of aerial ultrasonic pulse and ultrasonic tr Transmission system of aerial ultrasonic pulse and ultrasonic tr

1980-07-03

1982-04-20

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

310326, 367140, 367162, H04R 1700

Patent

active

043262740

ABSTRACT:
The disclosure relates to a system for aerially transmitting an ultrasonic view of a vibration mode, small in angle of direction, in a clear state and to a transmitter and a receiver used in the system. According to the system, an ultrasonic pulse can be used for distance measurement, control and other signal means even at relatively short distance.

REFERENCES:
patent: 3427481 (1969-02-01), Lenahan et al.

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