正弦标定波形组起始点的自动判别方法

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英文篇名：The automatic judgment method of the starting point of sine calibration waves 中文刊名：地震地磁观测与研究 英文刊名：Seismological and Geomagnetic Observation and Research 作者：邵玉平 ; 韩进 英文作者：Shao Yuping and Han Jin (Reservoir Induced Earthquake Research Institute ; Earthquake Administration of Sichuan Province ; Chengdu 610041 ; China) 中文关键词：短长平均 ; AIC算法 ; 正弦标定 英文关键词：STA/LTA ; AIC algorithm ; sine calibration 出版日期：2008-04-25 机构：四川省地震局水库地震研究所,四川省地震局水库地震研究所, 年：2008 期：02 出版单位：地震地磁观测与研究

摘要

地震观测系统标定的完整含义包括系统特性的测定和系统灵敏度的测定。系统灵敏度标定的最佳方法是振动台标定。由于地震台站不具备振动台标定的条件,因而目前普遍采用电动式力激励稳态正弦波标定的方法,即由一组正弦标定波形自动计算出幅频特性,并得到系统灵敏度。要实现计算程序的自动化,那么正弦标定波形组起始点的判断尤其重要。文章结合滑动短长平均法和AIC算法,提出了一种自动判别正弦标定波形组起始点的方法。
The full meanings of calibration for seismological observation system consist of the determination of system characteristic and system sensitivity. The best way of system sensitivity calibration can be obtained by vibration machine calibration. However, there are no necessary conditions for seismic station in using vibration machine calibration. So, a substitute method, that a force proportional to the current generated by inputting the sine wave calibration current directly in the force transducer coil,is widely used at present. Frequency response is automatically calculated by a group of sine calibration waves and system sensitivity is obtained. In the process, the judgment of the starting point of sine calibration waves is a key point. In combination of moving STA/LTA and AIC algorithm, an automatic judgment method is put forward.

引文

雷强.2003.检测算法在地震数据实时处理系统中的应用[J].地震地磁观测与研究,24(6):121~125
    中国地震局监测预报司.2003.数字地震观测技术[M].北京:地震出版社