Abstract:

This paper presents a novel robust S transform algorithm based on the clipping method to process signals corrupted by impulsive noise. The proposed algorithm is introduced to determine the clipping threshold value according to the characteristics of the signal samples. Signals in various impulsive noise models are considered to illustrate that the robust S transform can achieve better performance than the standard S transform. Moreover, mean square errors for instantaneous frequency estimation of the robust S transform are compared with that of the standard S transform, showing that the robust S transform can achieve significantly improved instantaneous frequency estimation for the signals in impulsive noise.