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。
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.
出处
《地震地磁观测与研究》
2015年第1期100-106,共7页
Seismological and Geomagnetic Observation and Research
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)
关键词
两道互相关模型
地震计
自噪声
自功率谱
互功率谱
two cross correlation model
seismometer
self-noise
auto-power spectrum
cross-power spectrum
