地震数据采集系统计时精度测试方法研究
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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.
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.
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.
引文
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[2] 刘益成,等.高分辨率地震勘探采集站参数选择[J].石油物探,1997,36(2) :116-123． Liu Yicheng et al. Parameter selection in high resolution seismic acquisition station [J]. Geophysical Prospecting for Petroleum, 1997,36(2) : 116-123．
[3] 陶知非,等.中华人民共和国石油天然气行业标准SY/T6627-2005,数字地震仪校准方法[M].北京:石油工业出版社.2005． Tao Zhifei, et al. The calibration method of the seismic data recording system [M]. Beijing: Petoleum Industry Press, 2005, 1-4．
[4] 何国信,等.中华人民共和国石油天然气行业标准SY/T5391-2007石油地震数据采集系统[M].北京:石油工业出版社2004． He Guoxin, et al. Petroleum seismic data acquisition system [M]. Beijing: Petroleum Industry Press, 2007．
[5] 中华人民共和国石油天然气行业标准SY/T 5935-2007ⅠSYSTEMⅡ/SYSTEM2000/IMAGE地震数据采集系统检验项目及技术指标[M].北京:石油工业出版社,2007． The checking items and technical specifications for SYSTEM Ⅱ/SYSTEM2000/IMAGE seismic data acquisition system [M]. Beijing: Petroleum Industry Press, 2007．
[6] Q/CNPC 84-2003 Serce1408遥测地震数据采集系统检验项目及技术指标[M].北京:石油工业出版社,2003． The checking items and technical specifications for Sercel408 seismic data acquisition system [M]. Beijing: Petroleum Industry Press, 2003．
[7] SY/T 5774-2004 SN388地震数据采集系统检验项目及技术指标[M].北京:石油工业出版社,2004． The checking items and technical specifications for SN388 seismic data acquisition system [M]. Beijing: Petroleum Industry Press, 2004．
[8] 赵汀,等.SY/T 6735-2008,ARAM-ARIES地震数据采集系统检验项目和技术指标[M].北京:石油工业出版社,2008． Zhao T, et al. The checking items and technical specifications for ARAM-ARIES seismic data acquisition system [M]. Beijing: Petroleum Industry Press, 2008．
[9] 胡朝炜,刘益成,易碧金.用软件实现地震仪测试系统中的高精度定时[J].物探装备,2002,12(3) :165-167． Hu C W, Liu Y, Yi B J. Using software to realize the high precision timing for seismic instru-ment test system[J]. Equipment for GeoPhysical Prospecting,2002,12(3) :165-167．
[10] 刘益成,孙祥娥.数字信号处理[M].北京:电子工业出版社,2004． Liu Y C, Sun X E. Digital signal processing[M]. Beijing:Publishing House of Electronics Industry, 2004．
[11] Sercel Inc. 408UL User's Guide Vol. 3, Ref. No. 0311401[R]? 2004 Sercel. All Rights Reserved. Printed in the France. 42-326
[12] Sercel Inc. 408UL Technology Manual[R]. Carquefou Cedex France: Sercel Inc, 2002．
[13] Input/Output Inc. I/O image theory of operators (Revised 01/02) [R]. Stafford, TEXAS USA: Input/Output Inc,2003．
[14] Geo-X System, Ltd. Aramaries[R]. Alberta Canada: Geo X System, Inc. , 2003．
[15] Geo-X Systems, Ltd. Aram-aries operators manual (Version 1． 00) [R]. Alberta Canada: Geo-X Systems, Ltd. , 2001
[16] Syntron, Inc. Polyseis ATM~(TM) User's Manual. Revision 0, April, 1999
[17] VibtechTechnology Ltd. IT System User's manual Ver. 1． 3, Vol. 1． [R]. Glasgow G40LT, UK: VibtechTechnology Ltd. , 2004．
[18] Fairfield Industries Inc. Box Seismic Data Net[R]. Fairfield, Lowa, USA: Fairfield Industries Inc. , 2001． .
[19] Sercel Inc. 408UL preference training guide (Seismic Areal Network)[R]. Carquefou Cedex France: Sercel Inc. , 2002
[20] JGI, Inc. MS-2000[R]. Tokyo 112-0012 JAPAN: JGI, Inc. , 2003．
[21] Seismic Instrument Inc. SI2000, Seismic Instrument[R]. Austin, Texas USA: Seismic Instrument Inc. , 2002．
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