基于上述理论分析和调查分析，论文第四部分提出了消除策略，这部分也是全文的重点之一。
Based on above theoretical analysis and survey analysis, the forth part of the paper, which is another point of the papers, proposes the eliminating strategies.
谐波的研究是电能质量领域的一个重要课题，研究领域包括谐波源分析、检测技术以及消除策略。
The study of harmonics is a very important topic for electric power quality. Research topics include harmonic source analysis and efforts, measurement technology and elimination strategy.
为了解决这个问题，提出了一种新的频率估计算法，采用扩频调制信息消除策略和分段相关FFT频谱分析技术实现频偏精确估计。
To solve this problem, a new method of frequency offset estimation is proposed. This method adopts modulated data elimination technique and the segmental correlation FFT algorithm.
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