A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
349/36
A61B 8/08 (2006.01) G01S 7/529 (2006.01)
Patent
CA 2027647
LAR 139665-1 PATENT APPLICATION METHOD AND APPARATUS FOR CHARACTERIZING REFLECTED ULTRASONIC PULSES Abstract of the Disclosure The invention is a method of and apparatus for characterizing the amplitudes of a sequence of reflected pulses R1, R2, and R3 by converting them into corresponding electrical signals E1, E2, E3 and thereafter exponentially adjusting the amplitudes of the respective signals E1, E2 and E3 to substantially the same value during each sequence thereby restoring the reflected pulses R1, R2, and R3 to their initial reflection values by means of timing means 12 and 13, an exponential generator 17 and a time gain compensator 18. Envelope and baseline reject circuits 23 and 24 respectively permit the display and accurate location of the time spaced sequence of electric signals having substantially the same amplitude on a measurement scale on a suitable video display or oscilloscope 14.
Cantrell John H. Jr.
Yost William T.
Swabey Ogilvy Renault
The United States Government As Represented By The National Aero
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