| CPC G01V 1/3817 (2013.01) [G01V 1/301 (2013.01); G01V 1/3843 (2013.01); G01V 2210/1293 (2013.01); G01V 2210/1423 (2013.01)] | 20 Claims |
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11. A method for seabed object detection, comprising:
providing a receiver array comprising a first streamer and a second streamer;
coupling a first plurality of receivers with the first streamer and a second plurality of receivers with the second streamer, a first receiver of the first plurality of receivers and a first receiver of the second plurality of receivers define a plane;
coupling a receiver array cross-cable with the first streamer and the receiver array cross-cable with the second streamer,
disposing the receiver array cross-cable at a first depth of a body of water;
coupling a first diverter with the receiver array cross-cable and a second diverter with the receiver array cross-cable;
providing a source array comprising a first source and a second source;
coupling a source array cross-cable with the first source through a first secondary cable and the source array cross-cable with the second source through a second secondary cable; and
disposing the source array cross-cable at a second depth of the body of water, the first source and the second source coplanar to the first receiver of the first plurality of receivers and
the first receiver of the second plurality of receivers, wherein the receiver array is configured to receive diffraction data that includes diffracted waves diffracted from a seabed object smaller than a Fresnel area, and
the Fresnel area is an area from which most of energy of a reflection is returned and arrival times of the reflection differ by less than half a period from an arrival of energy propagated from the source array.
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