Signal Receiver And Signal Processor Hardware Design Of Acoustic Positioning Buoy

This dissertation originates from the Active Underwater Acoustic Positioning System Reconstructing project,which employs underwater positioning buoys to measure multiple underwater targets with coorperative beacon.The signal receiver and processor platform is responsible for signal conditioning and signal processing.The main work of this dissertation includes the receiver and processor hardware design and implementation, as well as logic control programming.The hardware platform connects hydrophone and communication board, its role is to sample, process data, storage data and upload data to PC or communication board.Hardware design and chip selection are determined by system function and qualifications. Hardware design contains two parts: analog circuit and digital circuit, which are isolated by HCNR200. Analog circuit completes signal conditioning and digital circuit accomplishs data processing, data storage and uploading, which is composed of FPGA, DSP, FLASH and peripheral devices.The core chips adopted are TMS320C5509A, EP1C6Q240C8, K9K8G08U0A.Modularization design is adopted to devise FPGA logic program, which contains ADC module,DAC self-test module, FIFO buffer module, FLASH control module,DSP interface module. FLASH erase operation and read operation are directly controlled by DSP.Through laboratorial experiment, the platform designed in the dissertation works reliably and stably, and reach anticipated goal.