Design And Implementation Of High Frequency Imaging Sonar Principle Prototype

Our country is located in the eastern part of the Asian continent facing the Pacific Ocean and has a vast territorial sea.In today’s economic era,if China trying to catch up with economically developed countries and break into the forefront of world powers,China must learn to explore and develop marine resources reasonably.One important scientific and technological force for exploring and developing the ocean is sonar technology.As early as a few years ago,the laboratory where the author of this thesis works has successfully developed medium frequency imaging sonar system,and be awarded the national patent,which was delivered to the Chinese Navy.In recent years,with the continuous advancement of science technology and economy,sonar technology has more applications in the civilian field.In order to comply with the market and meet customer requirements,Our laboratory started the research on high-frequency imaging sonar.This thesis focuses on imaging sonar system prototypes,which includes the following:1.Collect and sort out high-frequency imaging sonar data at home and abroad,analyze the current development status of sonar technology,and summarize its research significance and purpose.2.Incorporate the characteristics and application fields of sonar at home and abroad,analyze and summarize the current domestic actual needs,make demand analysis and functional design for high-frequency imaging sonar system,and finally formulate the system design plan based on customer needs.3.Complete the system hardware design and implementation.Firstly,the schematic design of the system hardware circuit is carried out.The digital circuit design includes the minimum system design of the processor,the high-speed ADC circuit design,the communication interface design,and the motor drive circuit design.The analog circuit design of the sonar system includes the transmitter circuit design of the sonar system and the receiver circuit design.Then the PCB is fabricated and soldered to the designed circuit.Finally,some anti-interference measures in the system circuit are summarized and summarized.4.Complete the detailed design and implementation of the system software According to the software design scheme developed by the system,the software program programming of the ARM and FPGA processors in the system circuit mainly includes:initialization of the processor,emission control of the acoustic wave,sampling and receiving of the echo,control of the motor,and transmission of the data Communication,as well as the processing of digital signals5.Complete the experimental test of the system.The high-frequency imaging sonar principle prototype is combined with hardware and software to check and modify the problems in the system,and the high-frequency sonar prototype is tested and analyzed6.Summarize and forecast the development and production of high-frequency imaging sonar prototype,summarize the problems and experiences in this design and research,and make a prospect for the work after high-frequency sonar.