Detecting the number of 2-D harmonics in multiplicative and additive noise using enhanced matrix

详细信息	查看全文 | 推荐本文 |

• 作者：Shiyong Yang^a ; ^b ; ^{yangsy78@gmail.com}  ; [Author Vitae] ; Hongwei Li^c ; ^{hwli@cug.edu.cn}  ; [Author Vitae] ; Tao Jiang^a ; ^{Tao.Jiang@ieee.org}  ; [Author Vitae]
• 关键词：Number of 2-D harmonics ; Multiplicative noise ; Enhanced matrix ; Eigenvalue
• 刊名：Digital Signal Processing
• 出版年：2012
• 期刊代码：128_10512004
• 类别：cp
• 出版时间：March, 2012
• 卷：22
• 期：2
• 页码：246-252
• 文件大小：205 K

摘要

This paper proposes a method for detecting the number of two-dimensional (2-D) harmonics in multiplicative and additive noise. We define an enhanced matrix using the generalized covariances of 2-D harmonics in multiplicative and additive noise and derive an inherent relation between the number of 2-D harmonics and the eigenvalues of the enhanced matrix. The number of 2-D harmonics in multiplicative and additive noise could be detected based on this special relation. The proposed method avoids the peaks searching and does not need any assumptions about the distribution and color of the multiplicative and additive noise. The computation complexity of the proposed method is analyzed. Simulations demonstrate the effectiveness of the proposed method.