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An idealized signal, consisting of a noise-free, single-frequency infiniteduration input, is theoretically applied to the Yellowknife seismic array. A comparison of the output responses resulting from three possible signal processing techniques, viz. cross-correlation, sumall-squared, and multiple correlation, indicates that cross-correlation is the preferred technique for determining the azimuth and velocity of arrival of the incident seismic energy.
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Somers et al. (1966) studied this question.
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