Lihua Fu, China University of Geosciences, China
Hongwei Li, China University of Geosciences, China
Meng Zhang, Central China Normal University, China
A novel approach for frequency estimation of one-dimensional harmonics in multiplicative and additive noises is presented. To alleviate the resolution limitation of the traditional cumulant-based algorithms, group delay (GD) function is utilized. In this new approach, GD is applied to the 2nd order time-varying cumulants of harmonics in complex noises, called as the 2nd order CGD. For a given frequency estimation problem, this paper derives a simple and practical algorithm. Numerical results show that the sharp peak and high resolution property of GD preserved, which outperform some traditional methods greatly.
Index Terms:
frequency estimation, group delay, time-varying cumulants , high resolution
Citation:
Lihua Fu, Hongwei Li, Meng Zhang, Yuantong Shen, "Group Delay Based Approach for Frequency Estimation in Complex Noises," snpd, vol. 3, pp.264-268, Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD 2007), 2007
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