地震数据采集系统相位特性与测试方法
|
摘要
相位特性是地震数据采集系统的重要性能指标,直接影响地震数据采集的质量,是地震数据采集系统必须考核的指标之一。对地震数据采集系统中普遍使用的线性相位和最小相位两种滤波器的相位特性进行了讨论,在此基础上,从系统的频率特性出发,给出了相位误差的定义和测试原理;基于模拟信号数字处理技术推导了相位误差的频率域计算公式;详细介绍了采用方波脉冲信号测量相位误差的方法。
Phase properties are an important performance index for seismic data acquisition system and directly impact the quality of acquired data.So it is one of the indexes to be checked in seismic data acquisition system.The phase characteristics of linear phase filter and minimum phase filter commonly used in seismic data acquisition system were discussed.Based on the discussion,the definition and testing principles of phase error were given from the frequency characteristic of system.In addition,the computation formula of phase error in frequency domain was deduced based on the analog signal digital processing technology.Finally,the phase error measuring method by applying squarewave signal was detailed described.
Phase properties are an important performance index for seismic data acquisition system and directly impact the quality of acquired data.So it is one of the indexes to be checked in seismic data acquisition system.The phase characteristics of linear phase filter and minimum phase filter commonly used in seismic data acquisition system were discussed.Based on the discussion,the definition and testing principles of phase error were given from the frequency characteristic of system.In addition,the computation formula of phase error in frequency domain was deduced based on the analog signal digital processing technology.Finally,the phase error measuring method by applying squarewave signal was detailed described.
引文
1国家发展和改革委员会.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[S].北京:石油工业出版社,2005
2刘益成,戴得平,余厚全.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
3杨晓源.数字地震观测中的线性和最小相位滤波[J]. ??四川地震,2005,2:1-5
4刘益成,孙祥娥.数字信号处理[M].北京:电子工业出版社.2004.64-69,198-203
5国家发展和改革委员会.中华人民共和国石油天然气行业标准SY/T6590—2004 IMAGE地震数据采集系统检验项目及技术指标[S].北京:石油工业出版社,2004
6国家发展和改革委员会.中华人民共和国石油天然气行业标准SY/T6735-2008 ARAM-ARIES地震数据采集系统检验项目和技术指标[S].北京:石油工业出版社,2008
7国家发展和改革委员会.Q/CNPC 84-2003 Serce1408遥测地震数据采集系统检验项目及技术指标[S].北京:石油工业出版社,2003
8国家发展和改革委员会.SY/T5774-2004 SN388地震数据采集系统检验项目及技术指标[S].北京:石油工业出版社,2004
2刘益成,戴得平,余厚全.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
3杨晓源.数字地震观测中的线性和最小相位滤波[J]. ??四川地震,2005,2:1-5
4刘益成,孙祥娥.数字信号处理[M].北京:电子工业出版社.2004.64-69,198-203
5国家发展和改革委员会.中华人民共和国石油天然气行业标准SY/T6590—2004 IMAGE地震数据采集系统检验项目及技术指标[S].北京:石油工业出版社,2004
6国家发展和改革委员会.中华人民共和国石油天然气行业标准SY/T6735-2008 ARAM-ARIES地震数据采集系统检验项目和技术指标[S].北京:石油工业出版社,2008
7国家发展和改革委员会.Q/CNPC 84-2003 Serce1408遥测地震数据采集系统检验项目及技术指标[S].北京:石油工业出版社,2003
8国家发展和改革委员会.SY/T5774-2004 SN388地震数据采集系统检验项目及技术指标[S].北京:石油工业出版社,2004
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心