| 窄带信号数字滤波器的设计 |
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| 引用本文： | 吴涛,周云耀,赵凤花.窄带信号数字滤波器的设计[J].大地测量与地球动力学,2009,29(Z1):124-127. |
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| 作者姓名： | 吴涛 周云耀 赵凤花 |
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| 作者单位： | 中国地震局地震研究所,武汉,430071 |
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| 基金项目： | 中国地震局地震研究所所长基金 |
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| 摘 要： | 介绍一种特殊的CIC级联数字滤波器，它能对窄带信号进行滤波。通过抽点的方法能够有效地降低采样频率，而不影响有用信号。 同时介绍了运用SPTool图形化数字滤波器设计工具箱来设计凯泽窗FIR低通数字滤波器。
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| 关 键 词： | 窄带信号 CIC级联滤波器 凯泽窗 FIR 数字滤波器 |
DESIGN OF DIGITAL FILTER FOR NARROW BAND SIGNAL |
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| Wu Tao,Zhou Yunyao,Zhao Fenghua.DESIGN OF DIGITAL FILTER FOR NARROW BAND SIGNAL[J].Journal of Geodesy and Geodynamics,2009,29(Z1):124-127. |
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| Authors: | Wu Tao Zhou Yunyao Zhao Fenghua |
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| Institution: | Wu Tao,Zhou Yunyao , Zhao Fenghua(Institute of Seismology,CEA,Wuhan 430071) |
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| Abstract: | A special digital filter called cascade integrator combination digital filter which could filter the narrow band signal is introduced.It is very effectively to reduce sampling frequency by sampling points,which does not affect the useful signal.If we design FIR Kaiser windows filter,the effect of narrow band signal filtering will be good.At the same time,the use of SPTool which is a part of Matlab software to design FIR Kaiser windows filter is introduced. |
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| Keywords: | FIR |
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