M-estimators are widely used in active noise control (ANC) systems order to update the adaptive FIR filter taps. ANC reduce level by generating anti-noise signals. Up now, evaluation of capabilities has shown that there exists a need for further improvements this area. In paper, new improved M-estimator is proposed. The sensitivity proposed algorithm variations its constant parameter checked fe...

SUMMARY In the field of seismic interferometry, cross-correlations are used to extract Green’s function from ambient noise data. By applying a single station variation method, using autocorrelations, we in principle able retrieve zero-offset reflections stratified Earth. These valuable as they do not require an active source and, being zero-offset, better constrained space than passive earthqua...

In this paper, we construct a lower bound of the minimax risk in estimation problem when observe an unknoun pseudo-periodic vector-function Gaussian stationary noise with spectral density satisfying vector version Muckenhoupt condition.