High resolution pulse-echo ultrasonic method and apparatus

Details High resolution pulse-echo ultrasonic method and apparatus High resolution pulse-echo ultrasonic method and apparatus

1975-09-08

1976-11-16

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73 678R, G01N 2904

Patent

active

039916073

ABSTRACT:
Acoustic discontinuity responsive echo signals are compressed using special evaluating means for increasing the resolution of pulse-echo test apparatus. The acoustic discontinuity responsive echo signal undergoes mathematical convolution with a predetermined signal which latter signal is selected for providing that the mathematical product of the Laplace transform of the echo signal and the predetermined signal is unity. The mathematical convolution is performed by a computer, a correlator or an arrangement of delay lines.

REFERENCES:
patent: 3604250 (1971-09-01), Grandia
patent: 3754472 (1973-08-01), Dory

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