Patent ID: 7359283

Claim:
A method for combining signals of a pressure sensor and a particle motion sensor recorded in a marine seismic streamer to reduce noise in the combined pressure sensor signal and particle motion sensor signal, the recorded pressure signal having a bandwidth comprising a first frequency range and a second frequency range, the first frequency range being at lower frequencies than the frequencies of the second frequency range, and the recorded particle motion sensor signal having a bandwidth comprising at least the second frequency range, comprising: calculating a particle motion sensor signal in the first frequency range from the recorded pressure sensor signal, thereby generating a simulated particle motion sensor signal in the first frequency range; merging the simulated particle motion sensor signal only in the first frequency range with the recorded particle motion sensor signal in the second frequency range to generate a merged particle motion sensor signal having substantially the same bandwidth as the bandwidth of the recorded pressure sensor signal; and combining the recorded presssure sensor signal and the merged particle motion sensor signal for further processing.