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5 Operation More About Correlation • Pilot length > Sweep length and ≤ (Sweep length + Record length) • seIsmic trace correlation pilot length + record length 0 0 seismic trace (sweep length + record length) aux trace (pilot) 2n 0 0 pilot length 0 2n • Similarity seismic trace correlation 0 0 seismic trace aux trace (pilot) 0 0 0 pilot length 5-76 2n pilot length + record length 2n January 2002