Processing data, for improved, accuracy, from device for measuring speed of sound in a gas
Abstract
A method, used in connection with a pulse-echo type sensor for determining the speed of sound in a gas, for improving the accuracy of speed of sound measurements. The sensor operates on the principle that speed of sound can be derived from the difference between the two-way travel time of signals reflected from two different target faces of the sensor. This time difference is derived by computing the cross correlation between the two reflections. The cross correlation function may be fitted to a parabola whose vertex represents the optimum time coordinate of the coherence peak, thereby providing an accurate measure of the two-way time diffference.
- Inventors:
- Issue Date:
- Research Org.:
- Southwest Research Institute, San Antonio, TX (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175912
- Patent Number(s):
- 7107851
- Application Number:
- 10/894,084
- Assignee:
- Southwest Research Institute (San Antonio, TX)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FC21-96MC33033
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2004 Jul 19
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING
Citation Formats
Owen, Thomas E. Processing data, for improved, accuracy, from device for measuring speed of sound in a gas. United States: N. p., 2006.
Web.
Owen, Thomas E. Processing data, for improved, accuracy, from device for measuring speed of sound in a gas. United States.
Owen, Thomas E. Tue .
"Processing data, for improved, accuracy, from device for measuring speed of sound in a gas". United States. https://www.osti.gov/servlets/purl/1175912.
@article{osti_1175912,
title = {Processing data, for improved, accuracy, from device for measuring speed of sound in a gas},
author = {Owen, Thomas E.},
abstractNote = {A method, used in connection with a pulse-echo type sensor for determining the speed of sound in a gas, for improving the accuracy of speed of sound measurements. The sensor operates on the principle that speed of sound can be derived from the difference between the two-way travel time of signals reflected from two different target faces of the sensor. This time difference is derived by computing the cross correlation between the two reflections. The cross correlation function may be fitted to a parabola whose vertex represents the optimum time coordinate of the coherence peak, thereby providing an accurate measure of the two-way time diffference.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {9}
}
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