一种数据漂移滤波的算法与实现电路

An Algorithm and Its Execution Circuits for Zero Drift Filtering of Seismic Data

提出一种数据漂移滤波的算法，其基本原理是先利用数字低通滤波从子样数据中提取出零漂数据，再从采集得到的地震子样数据中把它减掉。这种算法既可用软件实现，也可用硬件实现。采用数字电路从已形成的地震子样数据中消除其中的零漂，可避免传统的模拟漂移校正电路的局限。

An algorithm for data zero drift filtering is presented.Its basic principle is as follows:zero drift values are abstracted from seismic data by a digital low pass filter and then substracted from seismic data.This algorithm can be implemented by using software or hardware.The digital circuits presented here are better than the analog circuit in suppressing zero drifts of seismic data.