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Effects of Noise On CSEM Interferometry With Synthetic Aperture Sources

Interferometry by MDD for CSEM retrieves the subsurface reflection response which is free of any effects related to the medium above the receivers. Consequently, the problematic airwave as well as any other interaction of the signal with the air-water interface is removed. We apply interferometry by MDD in combination with the synthetic aperture source concept to overcome sampling problems. We investigate effects of random noise and receiver orientation and positioning errors using a numerical dataset. We have found that the method is robust against random noise because of the synthetic aperture source. Receiver orientation and positioning errors limit the bandwidth of the retrieved reflection response. Orientation errors are more severe than positioning errors.