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本文用数值积分法,对RDZ1-12-66型自动触发电流计记录式强震仪的幅频响应失真进行校正。并采用高通数字滤波的方法,修正加速度图的零线.为此编制了计算机程序,绘制了修正后的加速度、速度和位移时程曲线.计算了修正前后加速度图的傅氏谱。同时,对这些结果加以讨论。 修正后的加速度图,精确地表示了仪器基本频带在0.09HZ和25HZ之间的绝对地面加速度。
In this paper, numerical integration method is used to correct the amplitude-frequency response distortion of RDZ1-12-66 Automatic Triggering Current Meter Recorder. And the zero line of the acceleration graph was corrected by using high-pass digital filtering method.A computer program was compiled and the corrected acceleration, velocity and displacement time history curve were plotted.The Fourier spectrum of the acceleration graph before and after correction was calculated. At the same time, these results are discussed. The corrected acceleration map shows exactly the absolute ground acceleration of the instrument’s fundamental band between 0.09Hz and 25Hz.