【作者】 顾鑫； 朱广平； 殷敬伟； 景严；

【Author】 GU Xin;ZHU Guang-ping;YIN Jing-wei;JING Yan;Acoustic Science and Technology Laboratory,Harbin Engineering University;Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University),Ministry of Industry and Information Technology;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； 海洋信息获取与安全工信部重点实验室(哈尔滨工程大学)工业和信息化部； 哈尔滨工程大学水声工程学院；

【摘要】 针对北极的粗糙冰层,本文建立了一个基于声线的北极冰下混响强度模型,并结合中国第九次北极科考的数据,利用该模型进行了算例的仿真。首先,结合北极冰-水界面的混响强度计算以及射线理论,本文提出基于声线的冰下混响强度模型。其次,提出可以利用声学软件Bellhop计算声线在北冰洋中传播的声线信息,并给出结合本文模型和Bellhop计算混响强度的程序框图。再次,针对粗糙的北极冰,介绍三种典型的散射模型。最后,结合中国第九次北极科考的实测声速数据和本文的冰下混响强度模型进行了数值仿真。基于该模型可实现冰下声纳性能预报,为我国极地声学设备的研制提供理论支撑。更多还原

【Abstract】 For the rough ice layer in the Arctic,a model for under-ice Arctic reverberation strength using ray theory is established.Combined with the data of China’s ninth Arctic scientific expedition,a simulation example was calculated.Firstly,combined with the calculation of the under-ice Arctic reverberation strength and the ray theory,a model for under-ice Arctic reverberation strength using ray theory is proposed.Secondly,it is proposed that the acoustic software Bellhop can be used to calculate the sound ray information of the sound ray propagating in the Arctic Ocean,and the block diagram of calculating the reverberation strength according to the model and Bellhop is given.Again,three typical scattering models are introduced for rough Arctic ice.Finally,numerical simulations were carried out based on the measured sound velocity data of China’s ninth Arctic scientific expedition and the model of this paper.Based on the model,the sonar performance prediction under ice can be realized,which provides theoretical support for the development of polar acoustic equipment in China.更多还原