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高阶统计量是信号处理的一种新的强有力的工具,近年来在谐波恢复领域取得了很好的应用效果。本文在分析现有自相关方法的基础上,着重综述了基于高阶统计量的谐波恢复方法以及基于各阶统计量相混合的预滤波谐波恢复方法,表明高阶统计量方法在抑制有色噪声影响上明显优越于自相关方法。
High-order statistics is a new and powerful tool for signal processing. In recent years, it has achieved good results in the field of harmonic recovery. Based on the analysis of the existing autocorrelation methods, this paper focuses on the harmonic recovery methods based on high-order statistics and the pre-filtering harmonic recovery method based on the combination of various statistics. The results show that the high-order statistical methods are effective in suppressing colored The noise impact is significantly superior to the autocorrelation method.