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本文研究噪声中正弦信号频率的估计问题 .结合DFT变换和插值方法 ,提出了一种基于DFT变换系数的频率估计算法 ,其计算简单 .结果表明 ,该方法有效地改善了频率估计精度 ,且便于工程实现 .
In this paper, the problem of estimating the frequency of sinusoidal signal in noise is studied. A frequency estimation algorithm based on DFT transform coefficient is proposed, which is simple in calculation. The results show that this method can effectively improve the frequency estimation accuracy and facilitate Project realization.