声波在海底界面的反射和透射是海底散射、海底混响、海底目标探测的重要问题。
Reflection and refraction of acoustic waves at a sediment interface is an important problem for seafloor scattering, bottom reverberation and the acoustic detection of objects.
并与实验数据进行了比较，结果验证了分置混响模型能够较准确的预报海底混响强度。
Comparing to the data of experiments, the model of the bistatic reverberation can be forecasted intensity of the oceanic reverberation.
本文结合波导不变性和时反海底混响零点设置方法，提出了一种利用波导不变性实现时反混响零点展宽的方法。
Combined the waveguide invariant and the time reversal reverberation hulling, a time reversal bottom reverberation null-broadening method is proposed.
为了利用侧扫声呐进行水下目标自动探测和识别，首先必须将声呐图像分为目标高亮区、海底混响区和目标阴影区。
Side-scan sonar image (SSI) must be segmented into regions of shadow, sea-bottom-reverberation, and object-highlight before underwater object can automatically be detected and recognized.
在海底是起伏不大的非均匀薄层的假设条件下，建立了底混响空间相关函数模型。
Under the assumption that the sea bottom is an almost-flat and randomly rough thin layer, a spatial correlation model for bottom reverberation was constructed.
数值计算以及实验结果表明：对浅海近程混响强度衰减规律影响最大的是海底散射特性；
The numerical results and experimental data show that the influence of bottom incline angle is weak while that of scattering angular function is more prominent.
浅海混响主要是海底散射引起的。
Shallow reverberation is mainly caused by the bottom scattering.
除此之外，也有必要从动物的癌变数据外推至人类癌变水平，并解决人类接触水平上的不确定性。海底交混响就是按时间外推到一种时间零值的。
Beyond that problem, it is necessary to extrapolate cancer data from animals to humans, and to deal with uncertainty about the levels of human exposure.
为了讨论混响对双基地声呐探测范围的影响，利用经验证的三维散射模型，讨论在不同入射、散射掠射角和散射方位角约束下的海底散射强度分布。
The distribution of sea-floor scattering strength held in the incident grazing angle, scattering graze angle, and scattering azimuthal angle was analyzed using a 3-D model that was validated.
为了讨论混响对双基地声呐探测范围的影响，利用经验证的三维散射模型，讨论在不同入射、散射掠射角和散射方位角约束下的海底散射强度分布。
The distribution of sea-floor scattering strength held in the incident grazing angle, scattering graze angle, and scattering azimuthal angle was analyzed using a 3-D model that was validated.
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