Horizontal-Longitudinal Correlations of Acoustic Field in Deep Water

【摘要】 The horizontal-longitudinal correlations of the acoustic field in deep water are investigated based on the experimental data obtained in the South China Sea.It is shown that the horizontal-longitudinal correlation coefficients in the convergence zone are high,and the correlation length is consistent with the convergence zone width,which depends on the receiver depth and range.The horizontal-longitudinal correlation coefficients in the convergence zone also have a division structure for the deeper receiver.The signals from the second part of the convergence zone are still correlated with the reference signal in the first past.The horizontal-longitudinal correlation coefficients in the shadow zone are lower than that in the convergence zone,and the correlation length in the shadow zone is also much shorter than that in the convergence zone.The numerical simulation results by using the normal modes theory are qualitatively consistent with the experimental results.更多还原

【Abstract】 The horizontal-longitudinal correlations of the acoustic field in deep water are investigated based on the experimental data obtained in the South China Sea.It is shown that the horizontal-longitudinal correlation coefficients in the convergence zone are high,and the correlation length is consistent with the convergence zone width,which depends on the receiver depth and range.The horizontal-longitudinal correlation coefficients in the convergence zone also have a division structure for the deeper receiver.The signals from the second part of the convergence zone are still correlated with the reference signal in the first past.The horizontal-longitudinal correlation coefficients in the shadow zone are lower than that in the convergence zone,and the correlation length in the shadow zone is also much shorter than that in the convergence zone.The numerical simulation results by using the normal modes theory are qualitatively consistent with the experimental results.更多还原