作者：张嘉伟^1,2, 师奕兵^1,2, 王志刚^1,2, 刘西恩^1,2

作者单位：1. 电子科技大学自动化工程学院, 四川成都 610054;
2. 中海油田服务股份有限公司技术中心, 北京 101149

关键词：阵列声波; 信号调理; 首波; 横波; 全波列

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。

Research of signal process and detecting head wave of acoustic array

ZHANG Jia-wei^1,2, SHI Yi-bing^1,2, WANG Zhi-gang^1,2, LIU Xi-en^1,2

1. School of Automation Engineering, Ueiversity of Electronics Science and Technology, Chengdu 610054, China;
2. Technical Center-China Oilfield Services Co. Ltd, Beijing 101149, China

Abstract: This paper analyzed the characteristic of the acoustic full waveform 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.

Keywords: Acoustic array; Signal process; Head wave; Shear wave; Acoustic full waveform

2006, 32(4): 4-5,100  收稿日期: 2006-2-17;收到修改稿日期: 2006-4-25

基金项目: 中海油企业发展基金资助(H04010701W070552)

作者简介: 

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