摘要
本文分析阵列声波测井中声波全波列信号的特点,采用前置通道信号调理技术对声波信号进行预处理以便于首波提取,并阐述一种首波到时的提取技术及实现算法。前置通道信号调理电路的设计采用了自动增益控制技术,可实现增益的自动调节。首波提取采用了短窗-长窗能量比算法,能够精确地检测到首波。
This paper analyzed the characteristic of the acoustic full wavefonn of acoustic array.Head wave could be easily picked up through signal processing.A method of detecting and correcting head wave of acoustic array was also introduced.The gain of receiver input channel could be controlled automatically.The head wave of acoustic array could be accurately detected by the method of energy ratio of short-window and long-window.
出处
《中国测试技术》
2006年第4期4-5,100,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
基金
中海油企业发展基金资助(H04010701W070552)
关键词
阵列声波
信号调理
首波
横波
全波列
Acoustlc anray
Signal process
Head wave
Shear wave
Acoustlc full waveform
