| 提高测量系统分辨率与信噪比的软件方法 |
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| 引用本文： | 陈敏. 提高测量系统分辨率与信噪比的软件方法[J]. 计量学报, 2004, 25(2): 185-187 |
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| 作者姓名： | 陈敏 |
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| 作者单位： | 南京师范大学控制科学与工程系,江苏,南京,210042 |
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| 摘 要： | 在实际应用中，智能仪表的测量分辨率与信噪比是非常重要的技术指标。采样定理是采样过程中所遵循的基本规律，它指出了重新恢复连续信号所必需的最低采样频率。中提出了利用过采样与求均值技术提高测量系统的信噪比和有效分辨率的方法，用该方法可在低成本条件下获得系统的高信噪比和有效分辨率。通过实例说明了软件实现的方法，并得出采用过采样与求均值技术具有很高的实用价值的结论。
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| 关 键 词： | 计量学 测量系统 分辨率 信噪比 采样频率 |
| 文章编号： | 1000-1158(2004)02-0185-03 |
| 修稿时间： | 2003-02-17 |
The Improvement of the Resolution and SNR of the Measurement System by Software |
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| CHEN Min. The Improvement of the Resolution and SNR of the Measurement System by Software[J]. Acta Metrologica Sinica, 2004, 25(2): 185-187 |
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| Authors: | CHEN Min |
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| Abstract: | In practical applications, resolution and SNR of intelligent meter are very important. In the course of the sampling, the sampling theorem is a basic rule and points out the least sampling frequency for reconstructing the signals . Using oversampling and averaging method to improve the resolution and SNR of the measurement system is described. The software is discussed with an example. Experiment shows that the oversampling and averaging method is very useful in practice. |
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| Keywords: | Metrology Measurement System Resolution SNR Sampling frequency |
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