Underwater Acoustic Communication Network Protocols Semi-physical Simulation System

"Underwater acoustic communication network protocol semi-physical simulation validation system" is in indoor existing conditions of the Marine environment simulate real to each network nodes caused by the communication between more way effect, and by the network node of the relative movement between the produce of doppler frequency shift. The system simulation platform through the Marine environmental parameters Settings, for underwater acoustic communication network communication between node provides a virtual acoustic channel, each network node can access the simulation system of the AD, DA interface through virtual channel realize communication. Through theoretical analysis of the data of simulation, the sea for the follow-up test to lay a solid foundation, and also reduce the number of sea test, and avoid unnecessary loss.This paper mainly work on the system simulation platform is designed and realized, through the system function demand and various performance indicators requirements, to select the suitable digital signal processing chip simulation platform hardware structure design, and modular design method of the system is divided into multiple function module task; According to the list of digital signal processor (DSP) data storage capacity and maximum operation load limit, design the system as a whole more task topological structure of the chip simulation; Use within and between piece of parallel signal processing technology, through the mouth of DSP chip high-speed link, realizing the large amount of data transmission system needs; In the Visual DSP++development software compiler environment, use C language completed the DSP chip program compiling, and achieve some of the functions of the module system tasks; The function of the system test, and use of Matlab to the test result is analyzed, and the simulation validation data and actual conditions are consistent with.