摘要
本文介绍了一种新型低频水声信号数据采集存储系统,该系统对水声换能器输出的微弱信号进行放大、滤波,然后进行数据采集、存储,在数据采集存储过程中采用自动增益控制(AGC)技术调节通道增益,把信号放大到一定范围内,无需人工设置通道增益。湖试试验表明该系统具有存储容量大、简洁、有效和可靠的特点。
This paper proposes a novel data acquisition and storage system of low frequency underwater acoustic signal. The system proposed in this paper amplifies and filters the weak signal of underwater acoustic transducer output ,and acquires and stores the signal. Moreover, the automatic gain control （AGC） technique is adopted to regulate the channel gain, so that the weak signal is automatically amplified to a suitable range. Experiment implemented in a lake proves that the system has advantage of massive storage, simplicity and reliability.
出处
《微计算机信息》
北大核心
2006年第10S期250-251,282,共3页
Control & Automation
基金
国家自然科学基金(60472101)资助课题
关键词
数据采集
自动增益控制
水声信号
acquisition,automatic gain control（AGC）,underwater acoustic signal
