Patent ID: 8917573
Filing Date: 2014-12-23
Classification: G01V

Abstract:
1. A method of estimating a far-field signature of a seismic source having plural seismic source elements, comprising: towing the seismic source elements on a first cable; providing a plurality of seismic receivers to receive signals from the seismic source elements of the seismic source, wherein the plurality of seismic receivers are provided to measure data useful for computing the far-field signature of the seismic source, and wherein providing the plurality of seismic receivers comprises providing more of the plurality of seismic receivers than the seismic source elements and providing at least one additional seismic receiver of the plurality of seismic receivers behind a last seismic source element of the seismic source in an in-line direction, the plurality of seismic receivers including the at least one additional seismic receiver being towed on the first cable that tows the seismic source elements; dynamically associating the seismic receivers with different ones of the seismic source elements over time, wherein dynamically associating the seismic receivers with the different ones of the seismic source elements comprises dynamically varying, over time, parameters representing distances between the seismic receivers and seismic source elements in a formula; and computing, by solving the formula, the far-field signature of the seismic source according to measurement data taken by the seismic receivers.