| 摘要 |
<p>A method and system for for improving the signature shape of marine seismic signals, said signals being gathered by towing an extended marine seismic array and a receiver cable behind a vessel, wherein the said marine seismic array consists of at least two seismic subarrays, each subarray comprising a number of seismic sources, the sources of the said marine seismc array being characterized by parameters TA,, respectively, in which i = 1...n and A = 1...N, n being the maximum number of seismic sources in a subarray and N being the total number of subarrays; and wherein each parameter TA,i is a function of (PA,i, VA,i, dA,i), in which PA,i VA,i, dA,i, respectively, represent the operating pressure, gun volume and towing depth of the respective seismic sources in the respective subarrays, and wherein the said parameters TA,i of the seismic array satisfy the following predetermined mutual relation:c, representing constant; and wherein further the following relation exists between the parameters: TA,i ≠ TB,i for at least one of these parameters, wherein A ≠ B and A = 1...N, B = 1...N, and TB,; representing similar to TA,; a characterizing parameter of one of the sources in one of the subarrays.</p> |
