摘要
为了提高超微弱信号的检测能力,对声探测系统的噪声来源和特性进行了分析。根据不同的噪声特性采取了匹配、滤波、频谱累积等抑制噪声的方法,提高了系统的信噪比和探测能力。试验结果表明采取的方法有效可行。
In order to enhance the ability of detection of ultra- weak signals, the sources and characteristics of noise are analyzed for acoustic detection system. The effective methods of restraining noise are noise matching,filtering,spectrum cu- mulation, which improve signal to noise ratio and enhance the ability of detection. The results show the availability and feasi- bility of the methods.
出处
《电声技术》
2012年第6期37-40,共4页
Audio Engineering
关键词
超微弱信号
声探测
信噪比
滤波
ultra - weak signals
acoustic detection
signal to noise ratio
filtering
