摘要
根据浅海混响射线简正波理论和可分离的海底散射模型,导出了混响垂直相关的表达式,理论研究和实验结果表明垂直相关与接收深度有关,与声源深度无关。提出一种利用混响强度衰减曲线与混响垂直相关曲线联合反演海底反射损失和海底散射强度的方法。数值模拟反演及对实验数据的反演表明:所提出的反演方法具有实验简便、反演速度比较快及反演的结果比较稳定等特点。
On the basis of the shallow-water normal mode combined with ray-mode analogies, the expression of reverberation vertical correlation is derived. Both of the theory and experiment data show: reverberation vertical correlation is independent on source depth, but dependent on receiver depth. A method of inversion for bottom reflection loss and bottom scattering strength is put forward. Reverberation intensity and vertical cross-correlation coefficients of reverberation are used in the inversion. The numerical and the experimental results show that the speed of inversion is fast and the inversion results are stable.
出处
《声学学报》
EI
CSCD
北大核心
2004年第1期49-56,共8页
Acta Acustica
基金
国家自然科学资金资助项目(10074070)
