摘要
本文以PDR—2记录仪构成的小型数字化地震观测系统为基础,从理论上对该系统的群延迟进行了分析,同时还进行了实际测算,发现在这种具有不太复杂电子线路的短周期地震观测系统中,群延迟的数值也是可观的。文章分析了它的特性及从中发现的信息还谈到了有关测试方法。
Based on the digital seismic monitoring system with PDR-2 recorders the group delay of the system has been theoretically analysed, and the practical computation has also been done. It has been found that the group delay can't be numerically neglected even in such a short-period monitoring system with simple electronic circuits. Lastly, the concerned characteristics and information in them have been analysed and the pertained methods have been presented.
出处
《地震研究》
CSCD
北大核心
1991年第3期273-282,共10页
Journal of Seismological Research
关键词
台网
地震
观测系统
群延迟
PDR-2
Network
PDR-2 recorder
Monitoring system
Group delay
Filtering
