水中目标回声特性测试3D微视频虚拟仿真实验

3D Micro-video Virtual Simulation Experiment for Echo Characteristics Testing of Underwater Target

水声测量技术被广泛应用于海防、油气勘探、地貌成像、探寻沉船等领域,同时是海洋技术、海洋测绘、海洋科学等方向学科人才培养的关键理论和实验教学内容之一。运用SolidWorks软件设计实验系统所需的接收和发射换能,以及不同种类3D虚拟模型,结合V-Ray虚拟仿真渲染、AI配音等多媒体技术搭建虚拟实验场景,以板块元算法和COMSOL声固耦合−频域有限元法理论为基础,完成不同目标散射声场数值仿真计算,模拟3D场景的水中目标声特性测试虚拟仿真实验。虚拟仿真实验通过3D微视频方式展示,不仅可以用来辅助教学,提高学生对水中目标测试技术的深度认知,同时可对普通民众进行声呐技术的科普教育。系统集水声工程科学研究、培育人才和服务社会功能集于一体。研究成果为扩大水声技术影响力和覆盖面发挥作用,为水下目标探测技术创新发展提供参考。

Acoustic measurement technology is widely used in coastal defense,oil and gas exploration,landform imaging,and shipwreck exploration.At the same time,the course is one of the key theoretical and experimental teaching contents for nurture talent in the fields of marine technology,marine surveying and mapping,and marine science.The transducers(transmitter and receiver)and different types of 3D virtual models required by the experimental system are designed by SolidWorks.The virtual experiment scene is constructed by V-Ray,artificial intelligence,and other multimedia technology.Based on the theory of planar element method and finite element method of COMSOL acoustic-structure coupling model in frequency domain,the acoustic scattering field of different targets is simulated.The simulation system can help students to understand the system structure,basic principle of echo,characteristic analysis method,and application fields of underwater target acoustic testing.The virtual simulation experiment is demonstrated by 3D micro-video,which can be used not only to assist teaching and improve students’deep cognition of underwater target testing technology,but also to popularize science education of sonar technology for common people.The system integrated with the scientific research of underwater acoustic engineering,the cultivation of talents and the service of society.The research results play an important role in expanding the influence and coverage of underwater acoustic technology,and provide a reference for the innovation and development of target detection technology.