摘要
首次提出一种混合色噪声(相关的高斯色噪声及相互独立的任意色噪声)背景下基于互高阶谱估计的QR分解法,仿真结果表明,该方法在混合色噪声和很低信噪比条件下谱估计的分辨率、稳定性及对混合色噪声的抑制等方面均明显优于自高阶谱估计方法,在具有更强的噪声抑制能力的同时,又使运算量和算法的复杂性大大降低。
This paper presented a mixed color noise （ correlated Gaussian noise and independent arbitrary color noise） based on cross high - order cumulant of QR method. Simulation results showed that the differentiate of the spectrum estimation, stability and mixed color noise suppression and so on under the condition of the mixed color noise and low signal - to - noise ratio are significantly better＂ than that of the higher -order spectrum method. The computation and complexity of the algorithm of the method are much lower while it has better noise suppression capabilities.
出处
《长春理工大学学报（自然科学版）》
2007年第2期36-38,25,共4页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金项目(F010202-69872012)
关键词
有色噪声
互四阶累积量
谐波恢复
频率估计
coloured noise
the four ranks cumulant
harmonic Retrieval
frequency estimates
