Title :
A hybrid approach to harmonic retrieval in non-Gaussian noise using fourth-order moment and autocorrelation
Author :
Zhang, Yan ; Wang, Shu-xun
Author_Institution :
Dept. of Electr. Eng., Jilin Univ. of Technol., Changchun, China
Abstract :
A new harmonic retrieval approach that is highly tolerant to colored non-Gaussian noise is proposed. A fourth-order moment is used to estimate the noise AR polynomial in the noisy observations, then the harmonics can be retrieved via the filtered observations. The assumptions made in the reported studies, that the non-Gaussian noise is asymmetrically distributed and no quadratic phase coupling occurs, are released
Keywords :
autoregressive processes; correlation methods; filtering theory; harmonics; probability; signal processing; AR polynomial; asymmetrically distributed noise; autocorrelation; colored non-Gaussian noise; filtered observations; fourth-order moment; harmonic retrieval; noise estimation; Additive noise; Colored noise; Noise cancellation; Phase estimation; Phase noise; Polynomials; Power harmonic filters; Radar signal processing; Sonar; Working environment noise;
Conference_Titel :
Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4325-5
DOI :
10.1109/ICOSP.1998.770238
