Waveguide invariant estimation based on correlation coefficient of tonal acoustic intensity interference fluctuation

The waveguide invariant is usually not extracted from the striation pattern of broadband continuous spectrum in low frequency analysis and recording at signal-to-noise ratio. In this paper, correlation coefficient multi-tonal acoustic intensity interference fluctuation utilized to estimate invariant. Since proportional relationship between reference scaled dependent on invariant, estimation can be done. Firstly, tonal has been resampled new time domain under radial non-radial motion models respectively. Then, similarity degree resampling scaling described by coefficient, peak corresponding true value. Finally, numerical results experimental prove proposed method's effectiveness.