Noise normalization based on the polarization filtering of fourth-order mixed cumulant slice

In order to suppress ocean noise, this paper proposes a noise normalization method based on polarization filtering of the fourth-order mixed cumulant slice. According to the difference of signals and noise in polarization, the polarization parameters of underwater signals are calculated, and a polarization filter is constructed according to the characteristics of polarization statistics. Simulation and experimental results show that the proposed method provides a new approach for noise normalization techniques.