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利用耦合简正波理论,分析由海底不平整所产生的散射形成的海底混响,由此模型得到的关于混响强度衰减及其空间相关特性的理论仿真结果与经典简正波混响模型吻合较好,并得到了海上实验结果的验证.通过理论和实验数据,重点分析了收发间距,脉冲信号带宽对混响强度及其衰减特性的影响,结果表明此模型对于收发合置、分置远程海底混响的分析均适用.
Using the coupled simple normal wave theory, the seabed reverberation caused by the scattering generated by the seafloor irregularity is analyzed. The theoretical simulation results about the decay of the reverberation intensity and its spatially dependent characteristics are in good agreement with the classical simple normal reverberation model The experimental results at sea are validated.The theoretical and experimental data are mainly focused on the influence of the transmission and reception spacing and the bandwidth of the pulse signal on the reverberation intensity and its attenuation characteristics. The results show that this model is effective for both the transmitting and the transmitting and the separating remote seabed reverberation Analysis is applicable.