台站数据共享技术研究
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摘要
随着互联网技术的快速发展和普及,越来越多的信息采集依托互联网技术。“十五”期间,中国地震局将地震观测台网接入互联网,数千个不同测项的观测数据依托互联网传输到区域台网中心和中国地震台网中心。所使用的野外观测设备不仅具有网络接入能力,提供实时观测数据流,而且具有大容量存储能力,可以同时向多个用户提供观测数据。
地震数据从地震台站先汇集到地震台网中心,台网中心对接收到的数据进行实时处理和人机交互分析;对广大科研人员提供数据服务也是台网中心的应用之一。把野外观测台站对研究人员开放,直接共享观测台站数据,增加了观测数据获取方式的灵活性,也有利于研究人员获取数据的及时性。论文面向后一种情况,研究如何增加获取数据的灵活性和及时性,使用了基于Linux系统的FTP原理,修改FTP的工作方式,加入新的模块,增强数据共享能力。
出于存储的便利和索引的方便,本文中提供了地震数据的缩放功能的实现,在虚拟目录下根据提供的虚拟映像选择需要下载的数据长度。
出于兼容不同仪器厂商数据读取软件的需求,本文方案中提供了数据格式变换的功能的实现,方便地震数据的使用人员选择合适的数据格式并给出SEED格式的转换原理。
另一方面不同应用与研究对采样率的要求是不一样的,不合适的采样率往往会限制数据的进一步使用,为此,本文方案中还设计了采样率变换功能。着重讲述了时间序列的抽取方式,以及如何根据不同的需求设计FIR低通滤波器。包括最小相位FIR滤波器和线性相位FIR滤波器,它们在不同类型地震中发挥着重要作用。
基于以上因素,本文的内容为实现综合野外观测台站数据共享技术,应用FTP文件传输协议,建立智能化的数据服务模型,为进一步提高综合地震观测台站的数据服务能力打下技术基础。
With the rapid development of Internet technology and the popularity of the Internet, more and more information collection relies on Internet technology. During "10th Five-Year Plan" period, the seismic observation network has been connected to the Internet, thousands of different measurement of different items of data transmission to the regional network centers and China Earthquake Network Center. By the use of field observation network access equipment not only has the ability to provide real-time data flow, but also has large storage capacity, can simultaneously to multiple users to provide data.
Seismic data from seismic stations first sent to the Seismic Network Centre, Network Center docking received real-time data processing and analysis of human-computer interaction. One of the applications of network center is provide data services for the vast numbers of scientific researchers. The field of observation stations opens for researchers, directly sharing observation stations data. Increased the flexibility of the means of data access and also conducive to the researchers access to the data timely.
Papers for the latter case, research on how to increase the flexibility and timeliness access to data. The text used in the Linux-based FTP principle, to amend the FTP work, adding new modules, enhanced data sharing capabilities.
For the convenience of storage and indexing, the paper provides seismic data in the zoom function of the realization, in a virtual directory under the virtual image of choice need to download the data length. For equipment manufacturers with different software needs to read the data, this paper provides a programme of data formats transform the function of the realization of the seismic data for use in selecting the appropriate data format and gives SEED format conversion principle.
On the other hand different applications and research on the sampling rate of demand is not the same, and often inappropriate sampling rate will further restrict the use of the data, this paper has also designed a programme of sampling rate transform function. Focus on the way from the time series, and how to design for a variety of FIR low-pass filter. Including the minimum phase FIR filter and linear phase FIR filter, they are in different types of seismic plays an important role.
Based on the above factors, the content of the paper for the realization of comprehensive field observation stations data sharing technology, applications FTP file transfer protocol, the establishment of intelligent data services model, to further enhance the overall earthquake observation stations data service capabilities and lay the foundation for technological.
地震数据从地震台站先汇集到地震台网中心,台网中心对接收到的数据进行实时处理和人机交互分析;对广大科研人员提供数据服务也是台网中心的应用之一。把野外观测台站对研究人员开放,直接共享观测台站数据,增加了观测数据获取方式的灵活性,也有利于研究人员获取数据的及时性。论文面向后一种情况,研究如何增加获取数据的灵活性和及时性,使用了基于Linux系统的FTP原理,修改FTP的工作方式,加入新的模块,增强数据共享能力。
出于存储的便利和索引的方便,本文中提供了地震数据的缩放功能的实现,在虚拟目录下根据提供的虚拟映像选择需要下载的数据长度。
出于兼容不同仪器厂商数据读取软件的需求,本文方案中提供了数据格式变换的功能的实现,方便地震数据的使用人员选择合适的数据格式并给出SEED格式的转换原理。
另一方面不同应用与研究对采样率的要求是不一样的,不合适的采样率往往会限制数据的进一步使用,为此,本文方案中还设计了采样率变换功能。着重讲述了时间序列的抽取方式,以及如何根据不同的需求设计FIR低通滤波器。包括最小相位FIR滤波器和线性相位FIR滤波器,它们在不同类型地震中发挥着重要作用。
基于以上因素,本文的内容为实现综合野外观测台站数据共享技术,应用FTP文件传输协议,建立智能化的数据服务模型,为进一步提高综合地震观测台站的数据服务能力打下技术基础。
With the rapid development of Internet technology and the popularity of the Internet, more and more information collection relies on Internet technology. During "10th Five-Year Plan" period, the seismic observation network has been connected to the Internet, thousands of different measurement of different items of data transmission to the regional network centers and China Earthquake Network Center. By the use of field observation network access equipment not only has the ability to provide real-time data flow, but also has large storage capacity, can simultaneously to multiple users to provide data.
Seismic data from seismic stations first sent to the Seismic Network Centre, Network Center docking received real-time data processing and analysis of human-computer interaction. One of the applications of network center is provide data services for the vast numbers of scientific researchers. The field of observation stations opens for researchers, directly sharing observation stations data. Increased the flexibility of the means of data access and also conducive to the researchers access to the data timely.
Papers for the latter case, research on how to increase the flexibility and timeliness access to data. The text used in the Linux-based FTP principle, to amend the FTP work, adding new modules, enhanced data sharing capabilities.
For the convenience of storage and indexing, the paper provides seismic data in the zoom function of the realization, in a virtual directory under the virtual image of choice need to download the data length. For equipment manufacturers with different software needs to read the data, this paper provides a programme of data formats transform the function of the realization of the seismic data for use in selecting the appropriate data format and gives SEED format conversion principle.
On the other hand different applications and research on the sampling rate of demand is not the same, and often inappropriate sampling rate will further restrict the use of the data, this paper has also designed a programme of sampling rate transform function. Focus on the way from the time series, and how to design for a variety of FIR low-pass filter. Including the minimum phase FIR filter and linear phase FIR filter, they are in different types of seismic plays an important role.
Based on the above factors, the content of the paper for the realization of comprehensive field observation stations data sharing technology, applications FTP file transfer protocol, the establishment of intelligent data services model, to further enhance the overall earthquake observation stations data service capabilities and lay the foundation for technological.
引文
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[2]William Stallings 著. 魏迎梅,王涌等译. Operating Systems: Internals and Design Principles [M]. Fourth Edition. 北京:电子工业出版社,2003
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[4]黄丽娜,管佩森,陈彩可著.Red Hat Linux 9.0 基础教程 [M]. 北京:清华大学出版社,2004
[5]郑君里,应启珩,杨为理著.信号与系统(第二版)[M]。北京:高等教育出版社,2000
[6]程佩青著. 数字信号处理教程(第三版) [M]. 北京:清华大学出版社,2004
[7]罗军辉,罗勇江等著. Matlab7.0 在数字信号处理中的应用 [M]. 北京:机械工业出版社,2005
[8]于成波,杨青等著. 数字信号处理及 MATLAB 实现[M]. 北京:清华大学出版社,2005
[9]楼顺天,李博茵著. 基于 MATLAB 的系统分析与设计—信号处理 [M]. 西安:西安电子科技大学出版社,1998
[10]Tim Ahern, Rob Casey, Deborah Barnes, Rick Benson, Tim Knight. SEED Reference Manual [CP]. USA.IRIS, 2006:35-116.
[12]李广平,高景春等译. 地震波形数据交换格式. 北京:中国地震局,2002
[13]国家数字地震台地震仪参数汇集.北京港震机电技术有限公司,2000
[14]王洪体, 陈阳, 庄灿涛. SEED 格式 STEIM2 数据压缩算法在实时地震传输中的应用 [J]. 地震地磁观测与研究,2004,(8):14-19.
[15]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.
[16] 雷于红 刘益成. 基于 MATLAB 最小相位数字滤波器的设计方法研究[J]. 石油仪器,2007,(8):18-20.
[17] 陈勇,堵亮,宋宁华. 软件滤波器的快速设计以及用 C 语言实现滤波器的功能[J]. 盐城工学院学报,2006,(2):25-27.
[18] ]W.Richard Stvens,Stephen A. Rago. Advanced Programming in the UNIX Environment,Second Edition. 人民邮电出版社. 2006.
[19] 中国地震局监测预报司. 数字地震观测技术. 地震出版社. 2003.
[20]吴镇扬. 多采样率信号处理 [EB/OL]. [2005-12-28]. http://jwc.seu.edu.cn/zq/signal/new/course/seven/7top.htm
[21]百度百科. VIM [EB/OL]. http://baike.baidu.com/view/113188.htm [22 ]FTP 文件传输协议. [EB/OL]. http://www.moon-soft.com/download/info/2311.htm
[23]GCC 使用入门. [EB/OL].http://www.51cto.com/art/200609/32317.htm
[24]GDB 使用说明. [EB/OL]. http://sxjcarl.itpub.net/post/4951/22659
[25]Linux 公社.VIM 使用方法讲解. [EB/OL]. http://www.linuxidc.com/Linux/2007-10/8686.htm
[26]M.Tim.Jones.Boost socket performance on Linux. [EB/OL]. http://www.ibm.com/developerworks/linux/library/l-hisock.html?S_TACT=105AGX52&S_CMP=cn-a-l
[27]地震仪器[B/OL]. http://www.hoodong.com/wiki/%E5%9C%B0%E9%9C%87%E4%BB%AA%E5%99%A8#5
[2]William Stallings 著. 魏迎梅,王涌等译. Operating Systems: Internals and Design Principles [M]. Fourth Edition. 北京:电子工业出版社,2003
[3]李玉波,朱自强,郭军著. Linux C 编程 [M]. 北京:清华大学出版社,2005
[4]黄丽娜,管佩森,陈彩可著.Red Hat Linux 9.0 基础教程 [M]. 北京:清华大学出版社,2004
[5]郑君里,应启珩,杨为理著.信号与系统(第二版)[M]。北京:高等教育出版社,2000
[6]程佩青著. 数字信号处理教程(第三版) [M]. 北京:清华大学出版社,2004
[7]罗军辉,罗勇江等著. Matlab7.0 在数字信号处理中的应用 [M]. 北京:机械工业出版社,2005
[8]于成波,杨青等著. 数字信号处理及 MATLAB 实现[M]. 北京:清华大学出版社,2005
[9]楼顺天,李博茵著. 基于 MATLAB 的系统分析与设计—信号处理 [M]. 西安:西安电子科技大学出版社,1998
[10]Tim Ahern, Rob Casey, Deborah Barnes, Rick Benson, Tim Knight. SEED Reference Manual [CP]. USA.IRIS, 2006:35-116.
[12]李广平,高景春等译. 地震波形数据交换格式. 北京:中国地震局,2002
[13]国家数字地震台地震仪参数汇集.北京港震机电技术有限公司,2000
[14]王洪体, 陈阳, 庄灿涛. SEED 格式 STEIM2 数据压缩算法在实时地震传输中的应用 [J]. 地震地磁观测与研究,2004,(8):14-19.
[15]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.
[16] 雷于红 刘益成. 基于 MATLAB 最小相位数字滤波器的设计方法研究[J]. 石油仪器,2007,(8):18-20.
[17] 陈勇,堵亮,宋宁华. 软件滤波器的快速设计以及用 C 语言实现滤波器的功能[J]. 盐城工学院学报,2006,(2):25-27.
[18] ]W.Richard Stvens,Stephen A. Rago. Advanced Programming in the UNIX Environment,Second Edition. 人民邮电出版社. 2006.
[19] 中国地震局监测预报司. 数字地震观测技术. 地震出版社. 2003.
[20]吴镇扬. 多采样率信号处理 [EB/OL]. [2005-12-28]. http://jwc.seu.edu.cn/zq/signal/new/course/seven/7top.htm
[21]百度百科. VIM [EB/OL]. http://baike.baidu.com/view/113188.htm [22 ]FTP 文件传输协议. [EB/OL]. http://www.moon-soft.com/download/info/2311.htm
[23]GCC 使用入门. [EB/OL].http://www.51cto.com/art/200609/32317.htm
[24]GDB 使用说明. [EB/OL]. http://sxjcarl.itpub.net/post/4951/22659
[25]Linux 公社.VIM 使用方法讲解. [EB/OL]. http://www.linuxidc.com/Linux/2007-10/8686.htm
[26]M.Tim.Jones.Boost socket performance on Linux. [EB/OL]. http://www.ibm.com/developerworks/linux/library/l-hisock.html?S_TACT=105AGX52&S_CMP=cn-a-l
[27]地震仪器[B/OL]. http://www.hoodong.com/wiki/%E5%9C%B0%E9%9C%87%E4%BB%AA%E5%99%A8#5
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