...中的运算舍入误差、A/D 转换的量化误差,对 周期信号而言,表现为当采样频率和信号基频不同步时产生的泄漏误差(Leakage errors),这是造成对周期信号进行分析、处理的主要误差来源。
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加窗插值fft算法减小了频谱泄漏误差和降低了谐波之间的相互干扰的影响。
The algorithm of interpolation of hanning Windows FFT reduce the spectral leakage error and the interference between harmonics.
讨论了周期信号取样的时域频域特性、非同步取样引起的截断误差和频谱泄漏误差。
The time-frequency domain sampling characteristics of periodic signal, the truncation error and the spectrum leakage error caused by asynchronous sampling are discussed in detail.
提出采用条纹外插以减小泄漏误差的方法,计算机模拟及初步实验证实了该方法的有效性。
A fringe extrapolation method is put forward to decrease the leakage errors. Computer simulations and primary experiments have confirmed the analysis.
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