混合色噪声下:可消除谱估计伪峰的多正弦信号频率估计互谱奇异值分解方法

Frequency estimation of multi-sinusoid signal based on cross-spectral approach with cleared false peaks

本文依据对正弦谐波信号的扩阶互相关函数矩阵的特征分析 ,提出消除扩阶方程产生的谱估计伪峰的理论及方法。仿真结果表明本文所提出的互谱奇异值 -整体最小二乘法 (SVD LS)可完全消除谱估计伪峰 。

This paper has successfully solved the false peaks caused by the extended characteristic equation with studying the singular value decomposition(SVD)features of the cross correlation matrix.Simulation results show that this new cross spectral SVD LS(SVD LS)approach can clear spectral false peaks.