Compensation design of CIC Decimation Filter for seismic prospecting

被引：0
|
作者：
Qi Jianzhong [1 ]
Cao Lijun [1 ]
机构：
[1] Shandong Univ Weihai, Sch Mech & Elect Engn, Weihai 264209, Peoples R China
来源：
ADVANCES IN MECHANICAL ENGINEERING, PTS 1-3 | 2011年 / 52-54卷
关键词：
Sigma-Delta ADC; CIC filter; ISOP compensation filter; pass-band attenuation;
D O I：
10.4028/www.scientific.net/AMM.52-54.829
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In seismic prospecting, the over sample combined with low quantity is used to converter input analog signals to 1-bit data flow. In order to realize decimation filtering for the high speed low resolution signal produced in the process of seismic prospecting, the CIC decimation filter is introduced into seismic survey system to achieve decimation and filting. The principle and the shortcoming were analyzed; finally an ISOP filter is introduced to compensate the pass-band attenuation, Simulation showed it could improve the performance of CIC filter, the cascade of CIC and ISOP is suitable for seismic prospecting system.
引用
收藏
页码：829 / 833
页数：5
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