Engineering aspects of multichannel processing based on measured noise correlations

1 January 1965

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE

Vol. 53 (12) , 1884-1889
https://doi.org/10.1109/PROC.1965.4464

Abstract

The problem of separating seismic signals from noise on a multichannel basis, by making use of the spatial organization of the noise, is discussed. A brief description of the method used to synthesize the multi-channel system on a computer is presented. Results obtained by multichannel processing the outputs from a 19-seismometer array, including signal response, noise response, and signal-to-noise ratio improvement are shown. These results are compared with those obtained by performing a simple summation of the array outputs, and are also compared with those which would be expected from simple summation if the noise were not organized in space. A practical method of applying analog multichannel processing in the field is presented. Finally, examples of teleseismic signals which have been extracted on a multichannel basis are shown.

Keywords

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