Method for generating orthogonal sweep signals

Details Method for generating orthogonal sweep signals Method for generating orthogonal sweep signals

1986-07-31

1987-08-11

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367189, G01V 122

Patent

active

046866540

ABSTRACT:
A first sweep signal consists of a plurality of waveforms having non-invariant fundamental periods exhibiting a monotonic frequency progression of at least one octave over the duration of the sweep. Each waveform may consist of an ordered set of asymmetrical pulses distributed within the period of the waveform in a prescribed sequence as a function of time. A second sweep signal is orthogonalized with respect to the first by time-reversing the distribution-sequence of the pulse set.

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Goupillaud, Signal Design in the "Vibroseis" Technique, Geophysics, vol. 41, No. 6, pp. 1291-1304, Dec. 1976.
Cunningham, Some Alternative Vibrator Signals, Geophysics, vol. 44, No. 12, pp. 1901-1921, Dec. 1979.
Sosie, A New Science Method, 40th Annual International SEG Meeting (11/12/70), Barbier, pp. 1-23.

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