Numerical and experimental studies were conducted to investigate the advantage of utilizing absolute travel time information in Bayesian geoacoustic inversions of broadband acoustic data. It is shown that inversions using absolute travel time can yield smaller uncertainties compared to inversions using relative arrival time and maximum-likelihood estimates for clock time synchronization. Experimental data collected in the Seabed Characterization Experiment on the New England Mud Patch in the Middle Atlantic Bight were used for real data demonstration, and it is shown that inversions using relative arrival times have greater uncertainty in estimating source distance, which consequently affects the overall posterior probability distribution of inverted parameters. Numerical study enables investigation of performance dependence on the signal-to-noise ratio, and it is found that absolute travel time information may have more profound advantages when the signal-to-noise ratio is low.

中文翻译：

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具有绝对旅行时间的宽带波形地声反演

进行了数值和实验研究以研究利用绝对走时信息在宽带声学数据的贝叶斯地声反演中的优势。结果表明，与使用相对到达时间和时钟时间同步的最大似然估计的反演相比，使用绝对旅行时间的反演可以产生更小的不确定性。中大西洋湾新英格兰泥块海床表征实验中收集的实验数据用于实际数据论证，结果表明使用相对到达时间的反演在估计源距离时具有较大的不确定性，从而影响整体后验倒置参数的概率分布。