摘要
设计了一套光纤光路探测水下声场的实验系统,对水下振动进行相干探测。实验结果和特征提取分析表明该系统可对水下振源在水表面激起的横向微波的频率进行实时、准确的监测;频谱分析和时-频域联合分析结果显示该系统能够实时探测10Hz到20kHz的水下声信号。
In order to detect underwater vibrations with interferometry technology, a set of experimental system using optical fiber path to catch underwater acoustic source was proposed. Experimental results and feature extraction analysis show that the system could monitor the frequency of the water surface transversal mini-wave stirred by underwater acoustic source accurately; the results of spectrum analysis and time-frequency joint analysis proved that the system could detect underwater acoustic signals, whose frequency are between 10 Hz and 20 kHz in real time.
出处
《光电子技术》
CAS
北大核心
2013年第2期141-144,共4页
Optoelectronic Technology
关键词
相干光学
高频信号探测
时-频分析
水下声信号
coherence optics
high frequency signals detection
time-frequency analysis
underwater acoustic signal
