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《Progress in Geophysics》 2014-05
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A high-performance design of SINC decimation filter for MEMS geophones

YANG Ming-ming;XIN Wei;LI Hong-qi;YANG Chang-chun;YI Jing-jing;Beihang University;Institute of Geology and Geophysics Chinese Academy of Sciences;China University of Petroleum;  
MEMS acceleration sensor is one of the essential parts of the seismic exploration equipment,which is the basis of high-quality seismic data acquisition for its excellent performance on detecting weak signals.The purpose of this paper is to study the decimation filtering section of the MEMS acceleration sensor and design an efficient decimation filter with high precision.The filter system consists of front-end antialiasing SINC filters,a compensation filter and an equal-ripple FIR filter.The coefficients of the SINC filter are analyzed and its hardware structure is optimized for FPGA in this paper.The proposed design is simulated on MATLAB and implemented on FPGA.The results show that the design can meet the requirements of the seismic exploration equipment with less power consumption,which is of great significance for the future seismic exploration system with multi-channel and large arrays.
【CateGory Index】: P631.44
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