地震地磁观测与研究2017，Vol.38Issue(1)：112-116,5.DOI:10.3969/j.issn.1003-3246.2017.01.019
PDS型地震仪拾振器幅频特性测试
Amplitude-frequency characteristics testing of the geophone of PDS seismometer
摘要
Abstract
The PDS seismometer is developed by Geophysical Exploration Center of China Earthquake Administration, which has been massively equipped and widely used in artificial seismic sounding and wide angle refraction/reflection geophysical probe. Because of the absence of the transfer function of the geophone internally installed in PDS seismometer, it results in the fact that geodynamical information cannot be properly calculated from the artificial seismic raw data so that the seismic data mining and scientific research work to some extent is restricted. On the basis of table vibrator testing, this article makes use of the amplitude-frequency characteristics testing of the geophone and Matlab curve fitting methods to build the transfer function of the geophone. The experimental results show that the transfer function identification method is effective and the fitting accuracy of amplitude-frequency characteristics < 0.5 dB.关键词
PDS型地震仪/拾振器/幅频特性测试/传递函数/曲线拟合Key words
PDS seismometer/geophone/transfer function identification/Matlab curve fitting引用本文复制引用
李从庆,徐以福,原秦喜,孙鸿..PDS型地震仪拾振器幅频特性测试[J].地震地磁观测与研究,2017,38(1):112-116,5.基金项目
中国地震局地球物理勘探中心青年优秀科技人才专项(项目编号:SFGEC2014010) （项目编号:SFGEC2014010）
