It’s the reason of spectrum leakage and fence effect. Paper analyzes the effects of spectral leakage, the reasons for the fence and analysis the role of spectrum correction.
论文分析了频谱泄漏和栅栏效应形成的原因,并分析了频谱校正的作用,提出了结合重心法的谐波分析法应用于介质损耗测量。
参考来源 - 变压器套管介质损耗在线监测的研究In order to reduce the systematic error introduced by non-integer-period sampling, the spectrum correction methods were studied. The phase difference correction method was proposed, which was based on the transfer center of window function.
针对非整周期采样误差影响频率计算的精度的问题,研究了频谱校正方法。
参考来源 - 基于时频域分析的涡街流量计信号处理方法与系统的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Through removing mean and frequency spectrum correction, the measurement precision of system is improved.
采用去均值和频谱校正的方法，改善了系统的测量精度。
For improving the precision of the frequency measure, presents a frequency measure algorithm by integrating automatic adjusting the sampling parameter and spectrum correction.
为提高频率测量精确度，提出一种自动调整采样参数与频谱校正相结合的频率测量算法。
The principle of spectrum correction based on difference is studied. A novel method by use of phase phase difference, namely the method of translation of window center is proposed.
研究了基于相位差的频谱校正方法的基本原理，提出一种利用相位差校正的新方法———窗中心平移法。
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