Seismic source and method for single sweep intermodulation mitigation
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United States of America Patent
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Aug 30, 2016
Grant Date -
Apr 24, 2014
app pub date -
Mar 15, 2013
filing date -
Oct 19, 2012
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Abstract
A method for calculating intermodulation noise generated with one or more land seismic sources. The method includes receiving seismic data (g) generated by actuating the one or more land seismic source with a single sweep; selecting a number of detectors (a-f) that detect a subset (ga-gf) of the seismic data (g); estimating earth responses (ha1-hf1) based on (i) the subset seismic data (ga-gf) and (ii) a ground force (gf) of the one or more land seismic source; calculating plural intermodulation noises (noiseA1-noiseF1) for the number of detectors based on the earth responses (ha1-hf1); and removing the plural intermodulation noises (noiseA1-noiseF1) from corresponding detector signals (ga-gf) to mitigate the intermodulation noise effect.
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