水声收发实验系统设计与实现  

The Design and Implementation of Underwater Acoustic Signal Experimental System

作　　者：孙保良[1] 宋振宇[1] 尚崇伟[1] 

机构地区：[1]海军航空工程学院,山东烟台264001

出　　处：《山西电子技术》2010年第1期39-41,共3页Shanxi Electronic Technology

摘　　要：根据科研需要完成了水声收发试验系统的设计与工程实现,它可实现主动、被动水声信号的产生、发射、接收、处理与显示等功能。其中,主动水声信号的波形及参数可任意设置,被动信号的产生包括实际采集数据和利用模型产生的数据,信号的显示包括时域和频域波形。该系统利用CVI技术完成了系统界面设计和控制,利用DAQ完成了A/D、D/A转化,将低噪声放大器件和FPGA结合完成了低噪声放大和数字滤波,将有源功率放大器件和单片机结合完成了数控功率放大器设计。系统经调试满足设计要求,具有结构简单、效费比高、扩展性好等特点。This paper mainly discusses the design and implementation of the underwater acoustic signal transmitting and receiving experimental system. The ssystem realizes the generating, trasmitting, receiving, processing and displaying of active and passive underwater acoustic signal. In the system, the waveform and parameter of active signal can be setting at random, and the passive signal can be generated by using real gathered data or data generated by the modle. Otherwise, the system can display both time domain and frequency domain waveform. CVI technology is used to accomplish the system control and system interface design, and DAQ is used to finish the A/D and D/A convert. Besides, low noise amplifer, combined with FPGA, realizes low noise magnify and digtal filter. It also accomplishs the digital control power amplifier design with the active power amplifier that combined with MCU. After system debugging, the system satisfies the design requirement, and it also possesses the characteristics such as simple structure and high ettlciency with low cost, perfect expandability and etc.

关 键 词：虚拟仪器 数字滤波器 自动增益控制 大功率运放 单片机 

分 类 号：TN911.7[电子电信—通信与信息系统]