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

作　　者：李彩华[1] 滕云田[1] 杨大克[1] 袁松湧[1] 

机构地区：[1]中国地震局地球物理研究所,中国北京100081

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)

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.

关 键 词：两道互相关模型 地震计 自噪声 自功率谱 互功率谱 

分 类 号：P315.62[天文地球—地震学]