| FFT方法谱估计时应考虑的误差 |
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| 引用本文： | 陆爽,赵斌.FFT方法谱估计时应考虑的误差[J].吉林工学院学报,1996,17(3):22-25. |
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| 作者姓名： | 陆爽 赵斌 |
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| 作者单位： | [1]吉林工学院机械工程系 [2]长春第二机床厂 |
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| 摘 要： | 讨论了ＦＥＴ应用过程中的Ａ／Ｄ转换量化误差，频谱混迭现象，频谱能量的泄漏以及频谱的栅栏效应等主要误差对分析结果的影响。提出了各种情况下可能采取的措施，供有关工程技术人员参考。
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| 关 键 词： | FFT 频谱分析 信号分析 误差 谱估计 傅里叶变换 |
Errors Considered in the FFT Spectrum Analysis |
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| Lu Shuang,Han Lianying.Errors Considered in the FFT Spectrum Analysis[J].Journal of Jilin Institute of Technology,1996,17(3):22-25. |
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| Authors: | Lu Shuang Han Lianying |
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| Abstract: | Based on the essence of fast Fourier transformation, the main errors encountered in the quantizing distortion in A/D converting, as well as the leakage effect, aliasing effect and railing effect in signal spectrum analysis are discussed. The corrective measures in various conditions are proposed. |
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| Keywords: | quantizing distortion leakage effect aliasing effect FFT |
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