| 提高FFT线性谱精度的一种方法 |
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| 引用本文： | 徐培民.提高FFT线性谱精度的一种方法[J].辽宁石油化工大学学报,1996(4). |
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| 作者姓名： | 徐培民 |
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| 摘 要： | 讨论一种改善ＦＦＴ线性谱精度的方法，应用该方法对代表某谐和分量的谱峰参数进行适当修正，能获得该分量较精确的频率、幅值和相位。计算机模拟试验证明了方法的有效性；频率检测误差小于０．１％，幅度误差小于５％，相位误差低于５°。
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| 关 键 词： | 数据处理 信号分析 频谱分析 |
A Method of Improving the Accuracy of FFT Linear Spectrum |
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| Xu Peimin.A Method of Improving the Accuracy of FFT Linear Spectrum[J].Journal of Liaoning University of Petroleum & Chemical Technology,1996(4). |
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| Authors: | Xu Peimin |
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| Affiliation: | Department of Mechanical Engineering |
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| Abstract: | A method which can improve the accuracy of FFT linear spectrum is introduced. With this method, the spectrum analysis accuracy of the signal composed of periodical components mainly is of a higher level with the frequency error less than 0.1%, the amplitude error less than 5% and the phase error under 5° above all. |
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| Keywords: | Data handling Signal analysis Spectrum analysis |
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