Method for generating and collecting random vibratory seismic da

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type

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367 41, 364421, G01V 100

Patent

active

047681748

ABSTRACT:
A method of producing random sweeps for seismic vibrator sources is described which produces correlograms with reduced side lobe contamination. Digital random phase digital codes activate non-impulsive sources. Detected signals are processed using periodic sweep correlations. The method is especially useful in urban areas where permitting requirements limit the drive level and frequency range of a vibratory seismic source.

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patent: 4601022 (1986-07-01), Muir
Waters, Kenneth, Reflection Seismology, A Tool for Energy Resource Exploration, 7/1978, Wiley Interscience Publication, pp. 98-99.
Lewis et al., A Pseudo-Random Number Generator for the System/360, by IBM System Journal, No. 2 (1969), pp. 136-146.
Ricker, Norman, The Form and Laws of Propagation of Seismic Wavelets, Oct. 1952, Third World Petroleum Congress, pp. 10-40.
Knuth, Generating Uniform Random Numbers, 3.2.2, Seminumerical Algorithms (vol. 2 of "Art of Computer Programming", Addison Wesley Pub. Co.), pp. 9-37.

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