Parallel Programming Of Multi-core DSP For Underwater Acoustic Countermeasure Simulation System

Based on the situation of underwater battlefield confrontation,this paper designs an underwater acoustic warfare simulation system platform.On the one hand,it provides scientific evaluation for the application ability of our sonar equipment in the complex underwater environment;on the other hand,it provides demand analysis,scheme deduction and technical route scientificity for the research and development of innovative underwater acoustic countermeasure materials and underwater acoustic warfare technology In addition,it provides scientific theoretical support and performance evaluation for the scientific deployment and use of counter equipment in different operational environments,the analysis of counter effectiveness and the decision-making of battle command.The third generation standard signal processing equipment is used in the hardware platform of the underwater acoustic countermeasure simulation system.Equipped with 40 TMS320C6678 high-performance DSP chips of TI company,it provides standardized highspeed data communication interface.At the same time,with the help of the bottom openness of reworks real-time operating system,according to the algorithm structure characteristics of the underwater acoustic countermeasure simulation system,a customized design of DSP internal resource allocation mode is carried out.After that,the system is divided into multiple calculation modules,such as integrated array sonar,towed array sonar,buoy sonar,underwater target simulation and so on.Each module can run independently.At the same time,the external signal input interface and tactical command interface are provided to verify the effect of counter equipment and tactical rationality.In each module,the calculation flow,data throughput and platform adaptability of the algorithm of the underwater acoustic countermeasure simulation system are considered comprehensively.The high-speed and robust parallel program is written from the processing frequency band,receiving array element,scanning angle and other parallel elements.Finally,considering the algorithm switching in dynamic scene,the dynamic reconstruction of underwater acoustic countermeasure simulation system is realized.The underwater acoustic countermeasure simulation system gives full play to the performance of the hardware platform,and realizes the synchronous and asynchronous parallel processing between modules,algorithm flow within modules and functional units within the chip.Considering the characteristics of the target source,the channel medium and the influence of the sound propagation,the game process between the countermeasure equipment and the disturbed sonar is simulated from the aspects of the detection situation,the target source level,the target radiated noise and the time,frequency and space characteristics of the echo.