| 地震数据采集系统计时精度测试方法研究 |
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| 引用本文： | 刘益成,易碧金,巩庆钢.地震数据采集系统计时精度测试方法研究[J].地球物理学进展,2009,24(2):759-762. |
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| 作者姓名： | 刘益成 易碧金 巩庆钢 |
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| 作者单位： | 1. 长江大学电信学院,荆州,434023
2. 东方地球物理公司装备事业部,涿州,072750 |
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| 基金项目： | 中国石油天然气集团公司重大科技专项基金 |
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| 摘 要： | 计时精度是地震数据采集系统的重要性能指标,直接影响到地震勘探对地层分辨的准确度.地震数据采集系统中计时精度主要由采集站的采样率精度决定.本文首先给出了计时精度的定义,基于模拟信号数字处理技术,分别研究了采用单方波脉冲法和双单位脉冲法测量计时精度的两种方法并比较了它们的测试精度,给出了采用本文所述方法的测试结果.最后对测试误差进行了讨论.
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| 关 键 词： | 计时精度 遥测地震仪 采集站 单位脉冲响应 |
| 收稿时间： | 2008-8-15 |
| 修稿时间： | 2008-10-15 |
The research of testing method for timing precision of seismic data acquisition systems |
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| LIU Yi-Cheng,YI Bi-Jin,GONG Qi-Gang.The research of testing method for timing precision of seismic data acquisition systems[J].Progress in Geophysics,2009,24(2):759-762. |
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| Authors: | LIU Yi-Cheng YI Bi-Jin GONG Qi-Gang |
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| Abstract: | The timing precision of telemetry seismic data acquisition systems is a very important performance index, which pases effects on stratum resolution of seismic prospecting directly. The timing precision of telemetry seismic data acquisition systems depends on the precision of sampling rates of data acquisition units. This paper gives the basic definition of timing precision first, based on analog-digital signal processing technique. It studies the single squire wave and double unit impulse methods of testing timing precision and compares their testing precisions,and presents test results using the method mentioned. At last it discusses test errors. |
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| Keywords: | timing precision telemetry seismic instrument acquisition unit unit impulse response |
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