LARGE-ARRAY SIGNAL AND NOISE ANALYSIS. NOISE SUPPRESSION BY LONG-PERIOD INFINITE-VELOCITY PROCESSORS
Special scientific rept. no. 19
TEXAS INSTRUMENTS INC DALLAS SCIENCE SERVICE DIV
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Various infinite-velocity processing schemes were applied to two long-period noise samples recorded at the Montana LASA on 2 and 3 December 1966. Straight summation, multichannel signal extraction with an infinite-velocity signal model, and multichannel prediction filtering were applied to the presence of ambient noise. From the comparision of the various processing schemes, the 9- element array using multichannel filtering was found to be more effective than any straight summation for separating P-wave signals or surface modes widely separated from the noise and very nearly as effective as the 12-channel MCF.