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基于互四阶累积量的谐参数联合估计的TLS-ESPRIT方法

Keywords: 谐波恢复,互高阶累积量,混合色噪声

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Abstract:

导出了混合色噪声中复值随机谐波信号和实值随机谐波信号的互四阶累积量及对角切片,利用这些对角切片皆可估计出相同的频率和相移,但根据实值随机谐波所估计的互功率为复值随机谐波的3/16.将互四阶累积量与高分辨率的ESPRIT方法结合,提出了在混合色噪声中基于互四阶累积量的谐参数联合估计的TLS-ESPRIT方法.研究结果表明,基于互四阶累积量的谐参数联合估计TLS-ESPRIT方法可抑制混合色噪声,具有优越的参数估计性能.

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