Method and apparatus for improving accuracy in ultrasonic...

Details Method and apparatus for improving accuracy in ultrasonic... Method and apparatus for improving accuracy in ultrasonic...

2006-03-14

2006-03-14

Williams, Hezron (Department: 2856)

Measuring and testing

Liquid level or depth gauge

Reexamination Certificate

active

07010973

ABSTRACT:
A method and apparatus for calibrating and/or improving the accuracy of time of flight ranging or level measurement systems. A correction factor is determined and applied to the calculated receive times for echo pulses in response to a change in the amplitude of the echo pulses or in response to a change in the noise floor.

REFERENCES:
patent: 4596144 (1986-06-01), Panton et al.
patent: 6277053 (2001-08-01), Desembrana
patent: 6621763 (2003-09-01), Lyon
patent: 6734819 (2004-05-01), Spanke
patent: 2002/0109626 (2002-08-01), Spanke

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