摘要
针对零均值乘性噪声和加性噪声共存、并且乘性噪声之间相关,乘性噪声和加性噪声之间也相关的噪声背景下的谐波频率估计问题,先用噪声互可混的概念来体现多个噪声之间的相关关系,并在此基础上提出了一种四阶时间平均多矩谱方法。该方法能够有效地估计出观测信号中的谐波频率,并且无需限制噪声的颜色和分布。仿真实验验证了该算法的正确性。
The problem of harmonic retrieval in zero mean multiplicative and additive noise was studied. The multiplicative noise is correlative itself and it is also correlative with the additive noise. The cross-mixing concept representing the correlative relationship of the noise was proposed. Based on this idea, a special fourth order time average moment spectrum was defined to estimate frequency of the harmonics. The proposed method does not need the constrain on the distribution and color of the noise, and its effectiveness was shown through simulation examples.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2005年第1期76-80,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金资助项目(60172032)
教育部博士学科点专项基金资助项目(2001404).
关键词
信息处理技术
乘性噪声
时间平均多矩谱
谐波恢复
information processing technology
multiplicative noise
time-average moment polyspectrum
harmonic retrieval
