Patent ID: 9001618
Filing Date: 2015-04-07
Classification: G01V

Abstract:
1. A system for attenuating noise in seismic signals detected in a marine seismic streamer, comprising: one or more sets of sensor arrays in the streamer, sensors in each sensor array evenly spaced apart by a sensor spacing to form a wavenumber filter to attenuate the seismic signals within a range of wavenumbers; one or more band-pass filters, each of which is operatively applied to output signals of one of said wavenumber filters to generate one or more noise-attenuated output signals; and wherein the passbands of each said band-pass filter are selected in relation to the range of wavenumbers attenuated at a selected velocity range by the corresponding wavenumber filter to whose output signals the band-pass filter is applied, so that the noise-attenuated output signals within a selected frequency range of interest propagating along the cable within said selected velocity range are attenuated and signals within said selected frequency range of interest having a velocity range outside said selected velocity range are preserved.