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基于两道互相关模型的地震计自噪声测试分析
Seismometer self-noise test and analysis based on two cross correlation model
【摘要】 基于经典的两道互相关分析方法,采用Matlab软件编写加窗平均周期图法的地震计自噪声计算程序,在天津市蓟县地震台、北京市延庆县西拨子地震台对两台相同地震计进行自噪声观测实验。对比两个台站的地震计自噪声功率谱值结果,发现进行合理防护有助于得到真实的地震计自噪声功率谱值。
【Abstract】 In this paper, a seismometer self-noise program with method of windowing average periodogram was made based on Matlab program and two cross correlation model. Two seismic monitoring systems were set to observe seismometer′s self-noise in Jixian Seismic Station, Tianjin and in Xibozi Seismic Station, Beijing. Compared the self-noise results of the two seismic stations, we can get one true seismometer′s self-noise spectrum with one suitable protective cover on the seismometers.
【关键词】 两道互相关模型;
地震计;
自噪声;
自功率谱;
互功率谱;
【Key words】 two cross correlation model; seismometer; self-noise; auto-power spectrum; cross-power spectrum;
【Key words】 two cross correlation model; seismometer; self-noise; auto-power spectrum; cross-power spectrum;
【基金】 中国地震局公益性行业专项“测震仪器质量检测技术研究与国际标准研制”支持(项目编号201408005)
- 【文献出处】 地震地磁观测与研究 ,Seismological and Geomagnetic Observation and Research , 编辑部邮箱 ,2015年01期
- 【分类号】P315.62
- 【下载频次】45