Research On High Resolution Imaging Sonar DSP And Realization Of Display Control Terminal Software Technology

In recent years,underwater imaging sonar has become an important means to explore the ocean.Through the high-speed transmission of data,the imaging sonar system has the characteristics of real-time and high resolution.In this paper,firstly,the imaging algorithm based on FFT beamforming is studied.In the algorithm,the technology of Dobby Chebyshev and approach focusing are added to improve the system’s ambiguity in near range imaging.Matlab simulation is used to verify the advantages of low computation and high resolution,which can be used in real-time imaging sonar system.Secondly,the high-speed data transmission model based on TMS320C6416 is studied,and the reliable data transmission model is obtained in this system.After the data is packed,the data is sent through W5300 chip by TCP / IP protocol.This paper focuses on the software design of real-time imaging sonar system on Lab Windows / CVI development platform,and introduces and implements the integrated module according to the requirements and functions of the module.The software uses the main interface and auxiliary interface to display real-time information and set some necessary parameters,which gives users an efficient and intuitive experience,and has good human-computer interaction function.The main functions of the software are: programming network interface based on socket,realizing high-speed data transmission,saving and displaying basic metadata and image data.The existing metadata is post imaged in the human-computer interface.This paper also focuses on the role of multithreading technology in each module.Finally,the test software is used to test the experimental data of the display and control software to verify the correctness of data transmission and the performance test of each module.The display and control software can work stably and function well,which meets the requirements of the system.