837工程中长周期地震计中短周期信号的提取  

Useful short-period signal extracted from moderate and longperiod seismometer used in project 837

作　　者：邱瑛[1] 

机构地区：[1]上海市地震局

出　　处：《地震地磁观测与研究》1995年第6期53-57,共5页Seismological and Geomagnetic Observation and Research

摘　　要：介绍从８３７工程中长周期摆中提取短周期信号的工作，其意义是利用现有的８３７工程中长周期摆增加区域台网的近震控制能力。该项工作主要是设计一个带有特殊滤波器的前置放大器，此滤波器在选取归一化参数时要求，以达到抑制低频而提取所需高频信号的目的。This paper introduces the work extracting short-period signal from moderate and long-period seismometer used in project 837, to strengthen micro-earthquake control ability of Shanghai Network. The work mainly includes design of a special filter in a preamplifier. The normalized parameter of the filter should meet the relation so as to restrain the low-frequency signal and extract the useful high-frequency signal.

关 键 词：地震仪 放大器 滤波器 周期信号 地震台 

分 类 号：P315.62[天文地球—地震学]