Fitting data, but poor predictions: Reverberation prediction uncertainty when seabed parameters are derived from reverberation measurements

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作者：
Holland, Charles W. [1 ]
机构：
[1] Applied Research Laboratory, Pennsylvania State University, State College, PA 16804, United States
来源：
Journal of the Acoustical Society of America | 2008年 / 123卷 / 05期
关键词：
For many decades; researchers have been developing inverse techniques for estimating seabed parameters from reverberation data; notably scattering strength. Generally; the angular dependence of the scattering kernel is unknown and is either solved for or assumed fixed. In either case; agreement is typically quite good between the measured reverberation and that modeled (by fitting scattering parameters). However; what are the resulting uncertainties in a reverberation prediction if the ocean or geometry changes? The main results of the paper are that (1) these prediction uncertainties are surprisingly large; of order 10 dB at 10 km and thus (2) traditional/current methods for reverberation inversion should be augmented; mitigating the large prediction uncertainties by an additional measurement. Several options for additional measurements are discussed. © 2008 Acoustical Society of America;
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页码：2553 / 2562
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