Design And Implementation Of Underwater Sound Field Simulation System Based On Bellhop Model

With the rapid development of military construction,the role of information technology and artificial intelligence in the military is also increasing.Using the advantages of artificial intelligence to conduct simulated confrontations between the two militaries has become a relatively common military training method.The Marine simulation system is helpful to the daily training,tactical simulation and tactical optimization of the navy.However,the marine environment is changing day by day and is quite complex.The impact of environmental information on war is sometimes huge.The environment has a certain influence on the propagation of the underwater acoustic channel and will interfere with the detection probability of the sonar.Based on this,an underwater acoustic field simulation system is proposed as the basic support system for simulated combat simulation.In accordance with the software life cycle theory of software engineering,the thesis analyzes the requirements of the system.Based on the requirements of the requirements specification,the whole system architecture is designed,and the whole system is determined as B/S architecture.Flask framework of Python is used for background logic,Angular JS and React JS are used for front-end page implementation,and the whole system is divided into three modules,namely environment database module,calculation module and visualization & Interaction module.Then,each module is designed in detail according to the requirements specification,including the selection of environmental database,the selection of computational model Bellhop,the database design and interface design,and a detailed analysis of the input and output files of the Bellhop model.In the implementation process,the analysis and query of the environmental database,the separation of the propagation path between the sound source and the hydrophone of the calculation module,the derivation of the detection probability formula of the calculation module and the interactive interface are respectively implemented.The system can query the marine environment based on the latitude and longitude.Based on the Bellhop model,it calculates the propagation of the underwater acoustic channel,provides various profiles and sonar detection probabilities,provides basic information for the marine simulated combat simulation platform,and assists in the decision-making of submarine route and combat tactics optimization between the two militaries.