10 May 2006 Correcting distortion in acoustic sense lines
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Pressure sense lines, as employed in the measurement of rocket engine test firings, can propagate the time-domain pressure signal out of hostile regions and allow instrumentation with pressure transducers. In such applications, it is necessary to correct the data to account for attenuation and resonance due to the sense line. One technique for doing so is the application of Fourier transform theory to obtain the transfer function of the sense line. Various techniques for obtaining the transfer function are explored, including the use of Gaussian noise, single frequency sweeps, and impulse signals as input functions. The transfer function thus obtained is mathematically fit, scaled, and validated against a related system.
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Patrick J. Vitarius, Patrick J. Vitarius, Don A. Gregory, Don A. Gregory, Valentin Korman, Valentin Korman, John Wiley, John Wiley, } "Correcting distortion in acoustic sense lines", Proc. SPIE 6222, Sensors for Propulsion Measurement Applications, 62220T (10 May 2006); doi: 10.1117/12.667666; https://doi.org/10.1117/12.667666

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