公开(公告)号：US20220011115A1

公开(公告)日：2022-01-13

申请号：US17294597

申请日：2019-11-19

Applicant: SERCEL

Inventor： Thomas MENSCH ,  Timothée MOULINIER

IPC: G01C21/20 ,  G01V1/38 ,  B63B79/15

Abstract: A method is provided for planning a trajectory to be performed by a marine vessel between a first point and a second point, the trajectory having a first path and a second path. The method includes a first step (202) of computing a theoretical trajectory in a ground reference frame from the first point to the second point assuming an absence of water current, the theoretical trajectory comprising a first theoretical path and a second theoretical path. A second step (204) includes computing a second path in the ground reference frame, and a third step includes (206) computing a corrected first path in a water reference. A fourth step includes (208) computing the trajectory in the ground reference frame from the first point to the second point based on the corrected first path and the second path.

公开(公告)号：US20200072998A1

公开(公告)日：2020-03-05

申请号：US16120714

申请日：2018-09-04

Applicant: SERCEL

Inventor： Thomas MENSCH ,  Jean-Pierre DEGEZ ,  Thierry FAVIER ,  Thomas ELBOTH

IPC: G01V1/36 ,  G01V1/38

Abstract: System and method for shooting plural seismic sources Si in a marine acquisition system with a deblending-designed dithering sequence DSnew. The method includes generating the deblending-designed dithering sequence DSnew to include random dithering times Di, a range of the dithering times Di being larger than a preset, non-zero, minimum value pmv, selecting a shooting sequence SS for the plural seismic sources Si; and shooting the plural seismic sources Si with the deblending-designed dithering sequence DSnew, based on the shooting sequence SS. All odd or all even members of the shooting sequence SS are shot with zero dithering times.