基于奇异值分解法的微震子台网监测能力分析  

The analysis of monitoring capability of microseismic subarray based on singular value decomposition method

作　　者：陈法兵[1,2] 王颖 任文涛 王传朋[1,2] 王元杰[1,2] 李岩[1,2] 

机构地区：[1]煤炭科学研究总院开采设计研究分院,中国北京100013 [2]天地科技股份有限公司开采设计事业部,中国北京100013 [3]郓城煤矿,中国山东274718 [4]山东唐口煤业有限公司,中国山东272055

出　　处：《地震地磁观测与研究》2015年第1期65-71,共7页Seismological and Geomagnetic Observation and Research

基　　金：国家重点基础研究发展计划(973)项目(2010CB226806);"十二五"国家科技支撑计划资助项目(2012BAK09B01)资助

摘　　要：微震台网的监测能力反映在监测范围和监测精度两个方面。通过对单台拾震器监测能力的分析,得出微震定位动态子台网组合的判别准则(即监测范围),利用广义逆的奇异值分解技术,计算估计震源参数精度的参量空间协方差矩阵,进而得出震源参数误差的等值线图(即监测精度),并使用线性相关系数证明此种评估方法的可靠性。采用此方法研究唐口煤矿微震监测台网的定位误差分布,与实际定位误差对比,吻合率较高。The criterion of the combination of dynamic microseismic sub-networks is obtained by the analyze of the monitoring ability of single seismometer. Parametric space covariance matrix which can estimate the accuracy of the source parameters is calculated by use of SVD of the generalized inverse. Then, the contour map of source parameter error is drawed up. Reliability of this kind of evaluation methods is proved with the inearly dependent coefficient. At the end, the distribution of the location error is researched by the method which this paper introduces. The agreement ratio is high contrasting with the actual location error.

关 键 词：台网布置 子台网组合 奇异值分解 定位误差 

分 类 号：P315.78[天文地球—地震学]