Spectral Leakage Canceling Algorithm for Improving Precision of Harmonic Analysis

ZHANG Jie-qiu; LIANG Chang-hong; CHEN Yan-pu; HAN Feng-yan

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Spectral Leakage Canceling Algorithm for Improving Precision of Harmonic Analysis

更新时间：2025-07-16

- Spectral Leakage Canceling Algorithm for Improving Precision of Harmonic Analysis
- Acta Electronica Sinica Vol. 33, Issue 9, Pages: 1614-1617(2005)
- 作者机构：
  
  1. 西安电子科技大学天线与微波国家重点实验室,陕西,西安,710071
  2. 空军工程大学理学院,陕西,西安,710051
  3. 西安通信学院计算机教研室,陕西,西安,710106
  4. 西安交通大学电子与信息工程学院,陕西,西安,710049
  5. 西安电子科技大学天线与微波国家重点实验室陕西西安,710071
  6. 空军工程大学理学院陕西西安,710051
  7. 西安通信学院计算机教研室陕西西安,710106
  8. 西安交通大学电子与信息工程学院陕西西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM93
- Published：2005
- 稿件说明：
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ZHANG Jie-qiu, LIANG Chang-hong, CHEN Yan-pu, et al. Spectral Leakage Canceling Algorithm for Improving Precision of Harmonic Analysis[J]. Acta Electronica Sinica, 2005, 33(9): 1614-1617.
DOI：

ZHANG Jie-qiu, LIANG Chang-hong, CHEN Yan-pu, et al. Spectral Leakage Canceling Algorithm for Improving Precision of Harmonic Analysis[J]. Acta Electronica Sinica, 2005, 33(9): 1614-1617. DOI：

摘要

提出一种能有效提高谐波参量测量精度的新算法.该法通过两个采样起点约间隔半个信号周期的采样数据作加窗傅里叶变换

并利用它们将谱泄漏抵消

从而有效地改善谐波分析的精度.所提出的方法适用于任何形式的对称窗函数.理论分析与数值模拟结果均表明:该算法可显著提高容易被强谐波所掩蔽的弱谐波的谱分析精度从而提高谱分析的整体测量精度.

Abstract

We propose a novel algorithm that can effectively reduce the errors of the harmonic parameters estimates of a periodic signal by counteracting the spectral leakage of the windowing FFT of two sampling data sequences

which stagger about half period.Proposed algorithm can be applied to any window function with central symmetry.Theory analysis and simulation results show that the algorithm can significantly improve the precision of harmonic parameter estimates.

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