高分辩率谐波恢复的互四阶累计量的Pisarenko方法

Harmonic retrieval under hybrid colored noisebackground by cross-four-order-cumulant Pisarenko method

互高阶谱估计是抑制混合色噪声的一种有效方法。为此提出了一种混合色噪声背景下谐波恢复的互四阶累积量的 Pisarenko方法。仿真结果表明 ,该方法可同时抑制各信道间相关的高斯色噪声及相互独立的任意色噪声的影响 。

The cross\|high\|order\|spectral estimation is an effective method in reducing hybrid colored noise.Harmonic retrieval in hybrid colored noise by cross\|four\|order\|cumulant Pisarenko method is introduced.The simulatations have shown that under the conditions of hybrid colored noise background and low SNR,this method is prior to auto\|high\|order\|spectral estimated method in the aspects of resolution,variance and reducing the colored noise.