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本文提出了一种基于双谱分析的谐波信号相位精确重构方法．该方法通过在被测信号中加入一相位为零的半基频信号，并对该合成信号进行双谱分析，实现了被测信号的相位精确求解，解决了已有基于双谱的信号相位估计方法中所存在的相对相移问题。仿真结果验证了该方法的有效性．
In this paper, a method of phase accurate reconstruction of harmonic signals based on bispectrum analysis is proposed. By adding a half-fundamental signal with zero phase to the measured signal and bispectrum analysis of the synthesized signal, the method can accurately solve the phase of the signal under test and solve the existing signal phase estimation based on bispectrum The problem of relative phase shift existing in the method. Simulation results verify the effectiveness of this method.