地震计阻尼和自振频率的频域测定

Determination of damping and frequency of seismometer in frequency domain

利用地震观测系统中的阶跃标定响应记录 ,在频域基于阶跃信号的幅频特性确定地震计的阻尼常数和自振周期。介绍了该方法的原理 。

The damping and frequency of seismometer is obtained by using the step calibration function.A theory is developed to obtain the damping of seismometer from the step response and nonlinear least square.The method is confirmed by JC V100 3D seismometer application.