【摘要】 本文通过频谱分析的实例来阐述了遥测地震数据采集系统动态范围与分辨小振幅地震反射信号之间的关系。同时阐述了地震系统加低截滤波器,尤其是模拟低截滤波器对系统的影响,并着重说明了具有120dB动态范围的24位地震系统为何不需要加任何低截滤波器。更多还原

【Abstract】 This article gives a complete commentary on the relationship between system dynamic range of teleme-try seismic acquisition system and resolution of low -amplitude seismic reflection signal according to spec-trum analysis examples. It also describes the influence on the system with low -cut filter-particularlythe influence of the analog low-cut filter and put attention to explain why 24 -bit system with 120 dB dy-namic range has no any low -cut filter.更多还原