【摘要】 为了实现激光水声浅海地形遥感探测中水声信号的实时解调与处理,设计了一种基于FPGA的激光多普勒测振计信号采集与处理系统。以CycloneⅡ系列FPGA为核心控制模块,结合ADS1174模数转换芯片、DAC8551数模转换芯片和MAX3232收发芯片,实现了高速数据采集和串口通信。该信号采集系统具有性能可靠、实时性强、集成度高、扩展灵活等特点,并且通过试验验证了其功能的正确性。更多还原

【Abstract】 In order to achieve real time demodulation and processing of acoustic signal in the laser underwater acoustic shallow terrain remote sensing,a FPGA based signal acquisition and processing system for laser Doppler vibrometer was designed.The system adopts the FPGA of Cyclone Ⅱ as the core control module. The high speed data acquisition and serial communication are realized in combination with ADS1174 A/D conversion chip,DAC8551 D/A conversion chip and MAX3232 transceiving chip. The signal acquisition system has the characteristics of reliable performance,good real time performance,high integration level and flexible expansibility. The functions of the system were validated in the tests.更多还原