Method of reducing monochromatic interference in continuous wave

Details Method of reducing monochromatic interference in continuous wave Method of reducing monochromatic interference in continuous wave

1975-09-29

1977-07-05

Birmiel, Howard A.

Communications: electrical

Selective

Having electron beam device

340 155F, 235181, G01V 102, G01V 136

Patent

active

040343332

ABSTRACT:
A monochromatic interference signal is removed from seismic data records by transmitting into the earth a seismic signal having a null component in its power spectrum at substantially the frequency of the interference signal. When cross-correlation techniques are used to determine subsurface characteristics, the cross-correlation product of the detected signal with the transmitted signal will contain a substantially zero component at the frequency of the interference signal.

REFERENCES:
patent: 3221298 (1965-11-01), Burns
patent: 3289154 (1966-11-01), Cunningham
patent: 3307648 (1967-03-01), Masterson
patent: 3638175 (1972-01-01), Stone
patent: 3757235 (1973-09-01), McCormick et al.
patent: 3889229 (1975-06-01), Kostelnicek et al.
patent: 3895343 (1975-07-01), Farr

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