Detection of wave propagation by a nonstationary cross-spectral density technique
نویسندگان
چکیده
The accurate determination of the speed of a propagating disturbance is important for a number of applications. A nonstationary cross-spectral density phase technique was developed to provide a statistical estimation for the propagation time, and was applied to a shock and a detonation wave. The results show that by including an envelope signal, the technique is an improvement over the traditional time-of-flight method, but it is more prone to error than the cross-correlation technique.
منابع مشابه
Detection of Wave Propagation by Nonstationary Cross-Correlation and Cross-Spectral Density Phase
The accurate determination of the speed of a propagating disturbance is important for a number of applications. A nonstationary cross-spectral density phase (NCSDP) technique was developed to provide a statistical estimate of the propagation time of sharp discontinuities such as steps or spikes that model shock or detonation waves. The uncertainty of the phase estimate is dependent on the coher...
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