然而，如果相位的变化是非线性的，那么对非正弦信号会产生严重的相位失真。
However, if the phase change is non-linear, then the non-sinusoidal signals will have a serious phase distortion.
本文研究非高斯arma有色噪声中的正弦信号频率估计问题。
This paper discusses the problem of estimating the frequencies of sinusoidal signals in colored non-Gaussian ARMA noise.
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