甚宽频带地震计二阶传递函数的精确测定方法研究

基金项目: 中国地震局“九五”重点资助项目(9501-0102,9501-0110)

详细信息

Precise Test Methods of 2nd Order Transfer Function for Ultra Broadband and Very Broadband Seismometer

¹Institute of Sesimology,CEA,40 Hongshance Road,Wuhan 430071,China;²Eearthquke Observation & Crustal Movement Laboratory,40 Hongshance Road,Wuhan 430071,China

Funds: 中国地震局“九五”重点资助项目(9501-0102,9501-0110)

摘要: 介绍了从速度输出通道测定超宽频带与甚宽频带地震计二阶传递函数的时域响应的测试方法,详细分析了低频响应分离法的原理。分析与应用表明,二阶传递函数的测试方法大大降低了标定过程中的计算难度,提高了标定的效率和精度。
- 地震计 /
- 二阶传递函数 /
- 阶跃响应
Abstract: The methods of testing the 2nd order transfer function of ultra broadband and very broadband seismometer from acceleration and velocity output are introduced;the test mothod of time-domain response of velocity output is discussed;and the principle of low-frequency response deseparature method is analyzed in detail.The results show that the test methods have degraded computation difficulties in course of calibration and raised efficiency and precision of calibration.
- seismometer /
- 2nd order transfer function /
- step calibration