Design And Implementation Of Navigation Sonar Transceiver System

With the rapid development of modern military technology,precision guided weapons have gradually become one of the main means of combating modern local war in recent years,and become the first military equipment which has great influence on the battlefield pattern in the early 21 st century.As an important component of guidance torpedo,seeker can provide guidance information for torpedo.In this paper,the hardware and software design and implementation of the guided sonar receiving and transmitting system are carried out based on the project of ’ near-range precise active acoustic positioning technology for underwater highspeed moving platform ’.Firstly,this paper analyzes the indicators of guided sonar,determines the design scheme and overall structure of the receiving and transmitting system of guided sonar,and then analyzes and designs each part of the sonar system :1.According to the design index of the receiver,the circuit design and simulation of the receiver signal conditioning circuit,A / D acquisition circuit and D / A conversion circuit are completed in this paper.At the same time,the PCB diagram of the receiver is drawn and the diagram is given.2.Based on the transmitter design index,the paper describes the basic composition of the transmitter and designs its circuit.According to the designed circuit,the transmitter PCB is drawn according to the system requirements.3.According to the system requirements,the logic design of various functions based on FPGA is completed,including data acquisition and transmission,gain control and transmitter signal source function.Based on these functions,the PCB design of digital part is completed.Based on the hardware platform,the test and debugging of the circuit function of each part of the system are completed.Finally,the system debugging and pool test are completed.The system can work normally and the indicators meet the design requirements.