| 表面测量中抗混叠数字滤波器的设计与实现 |
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| 引用本文： | 许景波,郭欣,苏鑫.表面测量中抗混叠数字滤波器的设计与实现[J].纳米技术与精密工程,2013(5):436-441. |
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| 作者姓名： | 许景波 郭欣 苏鑫 |
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| 作者单位： | [1]哈尔滨理工大学测控技术与通信工程学院,哈尔滨150080 [2]测控技术与仪器黑龙江省高校重点实验室,哈尔滨150080 |
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| 基金项目： | 2012年黑龙江省研究生创新科研项目资助（YJSCX2012-082HLJ）. |
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| 摘 要： | 在表面测量数据采集系统中，针对抗混叠滤波器设计问题，提出了“模拟滤波器＋数字滤波器”的设计方法．设计了具有线性相位的有限脉冲响应（FIR）型抗混叠数字滤波器，得出了幅频特性和相频特性，满足了表面测量信号处理的要求．与传统的单纯模拟抗混叠滤波器相比，该方法有效降低了对模拟滤波器的设计要求，使其易于实现，滤波效果好．把该方法应用于表面测量系统中，通过对实测数据的应用试验，验证了滤波器的性能．
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| 关 键 词： | 表面测量 抗混叠 FIR滤波器 滤波器设计 |
Design and Implementation of Anti-Aliasing Digital Filter in Surface Measurement |
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| Xu Jingbo,Guo Xin,Su Xin.Design and Implementation of Anti-Aliasing Digital Filter in Surface Measurement[J].Nanotechnology and Precision Engineering,2013(5):436-441. |
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| Authors: | Xu Jingbo Guo Xin Su Xin |
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| Affiliation: | 1. College of Measure-Control Technology and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China; 2. The Higher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province, Harbin 150080, China) |
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| Abstract: | In surface measurement data acquisition system, the design method of ＂analog filter and digit- al filter＂ was put forward for the design of the anti-aliasing filter. The anti-aliasing digital filter of finite impulse response（FIR） with linear phase was designed and the corresponding amplitude-frequency char- acteristic and phase-frequency characteristic were concluded, which satisfy the requirements of signal pro- cessing in surface measurement. Compared with the traditional single analog anti-aliasing filter, this method has better filtering effect, effectively reduces the design requirements of the analog filter and makes it easier to realize. This method is applied in the surface measurement system and the application experiment on the measured data verifies the performance of the filter. |
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| Keywords: | surface measurement anti-aliasing FIR filter filter design |
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