Hardware Design And Implementation Of The Digital Signal Processing Module Of Underwater Acoustic Communication Network

In recent years, with the growing demand of marine exploitation and national defence, the research of Underwater Acoustic Communication Network has been one of the hotspots in the area of Underwater Acoustic. The digital signal processing module is the core part of the Network.This thesis studies the latest Davinci technology of TI, aiming at the Underwater Communication environment, designs the hardware platform of the digital signal processing module.The thesis related to system hardware design, software designe and the construction of the embedded developing environment.This thesis uses ARM+DSP dual-core processor TMS320DM6446 as the core processor and designes the hardware system.This system includes signal acquisition module,system control and signal processing module and data transmission module.Every module's hardware design is introduced in detail in this thesis,includes:chip select,interface design, power supply design and so on.System software design includes two parts: ARM-side and DSP-side.This thesis uses embedded MontaVista Linux system as the software platform and constructs the embedded developing environment,includes:building cross developing environment of embedded system, analyzing the booting process of Bootloader, implemention the transplantation of Bootloader, completing the kernel configuration and transplantation of MontaVista Linux system. Based on this software platform, the ARM-side designs Linux device driver and application program. In order to facilitate the process of the DSP-side development and debugging, the way of ARM-side and DSP-side programming is given in this thesis.Besides, the USB interface chip's firmware, application and FPGA logic program are also introduced in this thesis.After debugging, this hardware platform meets the design requirements.