A precise evaluation method for the distortion of sine wave signal based on Fourier transform algorithm

被引：0
|
作者：
Liang, Zhi-Guo [1 ]
Geng, Shu-Ya [1 ]
机构：
[1] Changcheng Inst. of Metrology, Beijing 100095, China
来源：
Jiliang Xuebao/Acta Metrologica Sinica | 2004年 / 25卷 / 04期
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摘要：
Based on traditional Fourier transform algorithm, a precise distortion evaluation method of sine wave is introduced. Based on the period precise measurement technique, the base wave parameters of periodic signals are got, and then, the distortion is calculated in time domain by using sum of the energy of errors. The contents are entirely, including the whole effects of the harmonic distortion, the spurious distortion, and the noise distortion. And the effect of measurement system itself can be compensated by using the effective bits. Meanwhile, the error analysis is given out in some conditions. Both the validity and feasibility of the method are validated in one group imitation experimentations. The method can be applied to both the precise evaluation of total distortion of sinusoidal sources and the distortion calibration of the sine wave sources, especially in the large distortion evaluation.
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页码：357 / 361
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