所谓频谱泄漏 ,就是信号频谱中各谱线之间相互影响 ,使测量结果偏离实际值 ,同时在谱线两侧其他频率点上出现一些幅值较小的假谱。
This method adjusts sampling interval to trail after the power system frequency while harmonics analyzing, so that this method greatly reduces the spectrum leakage.
采用此算法可实时跟踪电网频率波动，极大地减小频谱泄漏提高谐波测量精度。
参考来源 - 基于DSP的高精度实时电力谐波测量装置的研究The analysis of the FFT arithmetic for short signal serials posts the essential reasons of spectrum leakage for traditional methods of spectral analysis.
通过分析FFT算法的有限记录长度效应，从理论上揭示了传统谱估计算法产生频谱泄漏的本质原因。
参考来源 - 短信号分析技术及其在故障诊断中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
验结果表明，补偿算法与未补偿的分析算法相比，频谱泄漏改善50%。
Thirdly the result show that the new algorithm is capable of reducing 50% of the leakage effect in DFT analysis.
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.
采样不同步产生的同步误差是造成频谱泄漏和影响谐波分析准确性、检测精度的重要原因。
Spectral leakage caused by synchronous error in no-synchronous sampling is an important reason, which reduces the accuracy of spectral analysis and harmonic measurement.
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