摘要
论述了水下声信号激光探测的原理及系统结构.具体设计了光探测器、前置放大电路、高通滤波电路、后级放大电路、低通滤波电路、50 Hz陷波器电路、串口通信电路、存储器扩展电路以及基于数字信号处理器TMS320LF2407A设计了控制和运算电路,并利用虚拟仪器来实现探测信号的实时显示.实验证明,该系统能够较好地完成对水下声信号的探测和数据处理.
Abstract： To measure underwater acoustic signals with laser technology, the principle and hardware structure are presented, including photodetector circuit, pre-amplifier circuit, high-pass filter circuit, after-class amplifier circuit, low-pass filter circuit, notch filter circuit of 50 Hz, serial communication circuit, memory expansion circuit, etc. The control and calculating circuit are designed based on digital signal processor TMS320LF2407A, and virtual machines are used to achieve real-time display of signal detection. Experimental results show that the system can detect underwater acoustic signals well.
出处
《大气与环境光学学报》
CAS
2010年第1期73-80,共8页
Journal of Atmospheric and Environmental Optics
基金
广西科学基金项目(0832012)
广西区青年基金项目(0640065)资助
