超宽频带与甚宽频带地震计的台站现场标定
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摘要
JCZ-1超宽频带地震计与CTS-1甚宽频带地震计是国家数字地震台网使用的关键设备,而地震计的台站现场标定是实现准确地震观测的重要环节。描述了这两种地震计对不同标定信号的响应规律;针对它们频带宽的特点,阐述了获取正确标定结果的条件;在分析标定误差来源基础上,提出了提高标定精度的数据处理方法。
The JCZ-1 ultra broadband seismometer and CTS-1 very broadband seismometer are key equipment employed in National Digital Seismograph Network, the in-situ calibration of seismometer at seismostation is a very important operation for correct seismological observation.This paper describes the response of these seismometers for different calibration signals. The conditions to get correct calibration results for the broad band features of the seismometers is expounded. On the basis of the analysis of calibration error source the data processing method to improve the calibration precision is presented.
The JCZ-1 ultra broadband seismometer and CTS-1 very broadband seismometer are key equipment employed in National Digital Seismograph Network, the in-situ calibration of seismometer at seismostation is a very important operation for correct seismological observation.This paper describes the response of these seismometers for different calibration signals. The conditions to get correct calibration results for the broad band features of the seismometers is expounded. On the basis of the analysis of calibration error source the data processing method to improve the calibration precision is presented.
引文
1 程骏玲,等.宽频带负反馈地震计的实用标定方法[J].地壳形变与地震,1998,18(4):89~93.1 Cheng Junling,et al.A practical calibration method for broadband feedback seismometer[J].Crustal Deforma-tion and Earthquake,1998,18(4):89-93.(in Chinese)
2 蔡亚先,等.用相关法测量负反馈地震计自身噪声[J].地壳形变与地震,1997,17(增):1~4.2 Cai Yaxian,et al.Surveying self-noise of feedback seis-mometer with correlation technique[J].Crustal Deforma-tion and Earthquake,1997,17(Supp.):1-4.(in Chi-nese)
3 程骏玲,等.宽频带负反馈地震计的基本常数测量[J].地壳形变与地震,1997,17(增):5~8.3 Cheng Junlin,et al.Determination of basic constants of broundband fedback seismometer[J].Crustal Deforma-tion and Earthquake,1997,17(Supp.):5-8.(in Chi-nese)
4 吕永清,等.JCZ-1超宽频带数字地震仪数字滤波方法[J].地壳形变与地震,1997,17(增):55~58.4 Lu Yongqing,et al.Digital filtering method of JCA-1ul-tra broadband digital seismometer[J].Crustal Deforma-tion and Earthquake,1997,17(Supp.):55-58.(in Chi-nese)
5 邵仲明,李峰.JCZ-1甚宽频带数字地震仪记录特征[J].地壳形变与地震,1999,19(1):87~94.5 Shao Zhongming and Li Feng.Seismic recording character of JCZ-1ultra broadband digital seismometer[J].Crustal Deformation and Earthquake,1999,19(1):87-94.(in Chinese)
6 周云耀.甚宽频带地震计频域标定的噪声数据处理方法[J].大地测量与地球动力学,2004,24(1):121~126.6 Zhou Yunyao.A method of noise data processing in fre-quency domain calibration for very broadband seismome-ter[J].Journal of Geodesy and Geodynamics,2004,24(1):121-126.(in Chinese)
7 吕永清,等.用MATLAB工具精确快速测定宽频带地震计的周期与阻尼系数[J].大地测量与地球动力学,2002,22(2):116~120.7 Lu Yongqing,et al.Precise fast determination of cycle and damping coefficient of wideband seismograph by MATLAB[J].Journal of Geodesy and Geodynamics,2002,22(2):116-120.(in Chinese)
8 周云耀,吕永清.用相关法提高地震计相频特性测试精度[J].大地测量与地球动力学,2003,23(1):119~122.8 Zhou Yunyao and Lu Yongqing.I mproving test precision of phase response of seismometer by using correlation technique[J].Journal of Geodesy and Geodynamics,2003,23(1):119-122.(in Chinese)
9 中国地震局监测预报司编.数字地震观测技术[M].北京:地震出版社,2003.9 Depart ment of Monitoring and Prediction,CEA.Technol-ogy of digital seismic observation[M].Beijing:Seismolog-ical Press,2003.(in Chinese)
10 蔡亚先,吕永清,周云耀,等.JCZ-1超宽频带地震计[J].地壳形变与地震,1995,15(3):1~8.10 Cai Yaxian,Lu Yongqing,Zhou Yunyao,et al.JCZ-1ul-tra broadband seismometer[J].Crustal Deformation and Earthquake,1995,15(3):1-8.(in Chinese)
11 蔡亚先,吕永清,周云耀,等.CTS-1甚宽频带地震计[J].大地测量与地球动力学,2004,24(3):109~114.11 Cai Yaxian,Lu Yongqing,Zhou Yunyao,et al.CTS-1very broadband seismometer[J].Journal of Geodesy and Geodynamics,2004,24(3):109-114.(in Chinese)
12 胡广书.数字信号处理———理论、算法与实现[M].北京:清华大学出版社,1997.12 Hu Guangshu.Digital signal processing:theory,argo-rithmand practice[M].Beijing:Publishing House of Ts-inghua University,1997.(in Chinese)
2 蔡亚先,等.用相关法测量负反馈地震计自身噪声[J].地壳形变与地震,1997,17(增):1~4.2 Cai Yaxian,et al.Surveying self-noise of feedback seis-mometer with correlation technique[J].Crustal Deforma-tion and Earthquake,1997,17(Supp.):1-4.(in Chi-nese)
3 程骏玲,等.宽频带负反馈地震计的基本常数测量[J].地壳形变与地震,1997,17(增):5~8.3 Cheng Junlin,et al.Determination of basic constants of broundband fedback seismometer[J].Crustal Deforma-tion and Earthquake,1997,17(Supp.):5-8.(in Chi-nese)
4 吕永清,等.JCZ-1超宽频带数字地震仪数字滤波方法[J].地壳形变与地震,1997,17(增):55~58.4 Lu Yongqing,et al.Digital filtering method of JCA-1ul-tra broadband digital seismometer[J].Crustal Deforma-tion and Earthquake,1997,17(Supp.):55-58.(in Chi-nese)
5 邵仲明,李峰.JCZ-1甚宽频带数字地震仪记录特征[J].地壳形变与地震,1999,19(1):87~94.5 Shao Zhongming and Li Feng.Seismic recording character of JCZ-1ultra broadband digital seismometer[J].Crustal Deformation and Earthquake,1999,19(1):87-94.(in Chinese)
6 周云耀.甚宽频带地震计频域标定的噪声数据处理方法[J].大地测量与地球动力学,2004,24(1):121~126.6 Zhou Yunyao.A method of noise data processing in fre-quency domain calibration for very broadband seismome-ter[J].Journal of Geodesy and Geodynamics,2004,24(1):121-126.(in Chinese)
7 吕永清,等.用MATLAB工具精确快速测定宽频带地震计的周期与阻尼系数[J].大地测量与地球动力学,2002,22(2):116~120.7 Lu Yongqing,et al.Precise fast determination of cycle and damping coefficient of wideband seismograph by MATLAB[J].Journal of Geodesy and Geodynamics,2002,22(2):116-120.(in Chinese)
8 周云耀,吕永清.用相关法提高地震计相频特性测试精度[J].大地测量与地球动力学,2003,23(1):119~122.8 Zhou Yunyao and Lu Yongqing.I mproving test precision of phase response of seismometer by using correlation technique[J].Journal of Geodesy and Geodynamics,2003,23(1):119-122.(in Chinese)
9 中国地震局监测预报司编.数字地震观测技术[M].北京:地震出版社,2003.9 Depart ment of Monitoring and Prediction,CEA.Technol-ogy of digital seismic observation[M].Beijing:Seismolog-ical Press,2003.(in Chinese)
10 蔡亚先,吕永清,周云耀,等.JCZ-1超宽频带地震计[J].地壳形变与地震,1995,15(3):1~8.10 Cai Yaxian,Lu Yongqing,Zhou Yunyao,et al.JCZ-1ul-tra broadband seismometer[J].Crustal Deformation and Earthquake,1995,15(3):1-8.(in Chinese)
11 蔡亚先,吕永清,周云耀,等.CTS-1甚宽频带地震计[J].大地测量与地球动力学,2004,24(3):109~114.11 Cai Yaxian,Lu Yongqing,Zhou Yunyao,et al.CTS-1very broadband seismometer[J].Journal of Geodesy and Geodynamics,2004,24(3):109-114.(in Chinese)
12 胡广书.数字信号处理———理论、算法与实现[M].北京:清华大学出版社,1997.12 Hu Guangshu.Digital signal processing:theory,argo-rithmand practice[M].Beijing:Publishing House of Ts-inghua University,1997.(in Chinese)
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