| 数字抽取滤波器的DSP优化设计 |
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| 引用本文： | 谭耀银,廖成旺,邓涛,赵凤花,丁炜,陈卫明. 数字抽取滤波器的DSP优化设计[J]. 大地测量与地球动力学, 2007, 27(Z1): 87-90 |
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| 作者姓名： | 谭耀银 廖成旺 邓涛 赵凤花 丁炜 陈卫明 |
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| 作者单位： | 1)中国地震局地震研究所，武汉 4300712)地壳运动与地球观测实验室，武汉 430071 |
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| 摘 要： | 为了降低地震数据采集系统的成本和功耗，采用数字信号处理器（DSP）实现∑-△模数转换器中的数字抽取滤波器算法。通过采取查表法、倒序循环遍历法以及模拟循环寻址法等优化方法，以较低工作频率实现了四通道四级抽取滤波运算，达到了系统设计的要求。
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| 关 键 词： | DSP 数字抽取滤波器 优化 查表法 倒序循环遍历 |
OPTIMAL DESIGN OF DIGITAL EXTRACTION FILTER WITH DSP |
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| Tan Yaoyin,Liao Chengwang,Deng Tao,Zhao Fenghua,Ding Wei,Chen Weiming,. OPTIMAL DESIGN OF DIGITAL EXTRACTION FILTER WITH DSP[J]. Journal of Geodesy and Geodynamics, 2007, 27(Z1): 87-90 |
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| Authors: | Tan Yaoyin Liao Chengwang Deng Tao Zhao Fenghua Ding Wei Chen Weiming |
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| Affiliation: | 1) Institute of Seismology , CEA , Wuhan 4300712) Crustal Movement Laboratory , Wuhan 430071 |
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| Abstract: | Digital Signal Processor (DSP) is used as a digital decimation filter to lower the cost and power consumption of earthquake data acquisition system. The program is optimized after the look up table method, reverse circular traversal method and circular addressing simulation method to implement four stage and four channel filtering under low operating frequency,so as to meet practical requirement. |
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| Keywords: | DSP digital decimation filter optimization look-up table method reverse circular traversing |
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