【作者】 张春月； 黄益旺； 吴萌；

【Author】 ZHANG Chun-yue;HUANG Yi-wang;WU Meng;Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University;College of Underwater Acoustic Engineering,Harbin Engineering University;

【机构】 哈尔滨工程大学水声技术重点实验室； 哈尔滨工程大学水声工程学院；

【摘要】 本文针对海底沉积物的衰减特性展开研究,在Hamilton理论基础上,根据海底反射声场模型得到短距离海底反射信号,利用反射信号波形通过差分进化(DE)算法进行海底沉积物的声衰减特性反演。仿真结果表明,该反演方法可以直接获取沉积物衰减系数与频率的依赖关系。更多还原

【Abstract】 In this paper,the attenuation characteristic of seabed sediment is studied.On the basis of Hamilton theory,the short-range seabed reflection signal is obtained from the seabed reflection sound field model.The acoustic attenuation characteristic of seabed sediment is inverted by using the reflected signal waveform through differential evolution(DE)algorithm.The simulation results show that the frequency dependence of sediment attenuation coefficient can be directly obtained by the inversion method.更多还原