公开(公告)号：US20210263477A1

公开(公告)日：2021-08-26

申请号：US17255373

申请日：2019-06-19

Applicant: SERCEL

Inventor： Christophe L'HER

IPC: G04G3/02

Abstract: The method for estimating the drift over time of a physical operating parameter of a clock for dating seismic data samples associated with a seismic data collection node involves measuring (10) at least one quantity associated with the clock, at predetermined instants or during predetermined time periods, and applying (12), to this quantity, a predetermined non-linear law of variation of this quantity that depends on the values collected during the measurement step (10), so as to obtain an estimation of the drift over time of the physical operating parameter.

公开(公告)号：US20160187518A1

公开(公告)日：2016-06-30

申请号：US15065023

申请日：2016-03-09

Applicant: SERCEL

Inventor： Thierry ROGER ,  Gaetan MELLIER ,  Christophe L'HER

IPC: G01V1/38

CPC classification number: G01V1/3826

Abstract: A method and apparatus are provided for steering a first acoustic linear antenna belonging to a plurality of acoustic linear antennas towed by a vessel. A plurality of navigation control devices are arranged along the plurality of linear antennas in order to act at least laterally on the position of the linear antennas. At least one of the navigation control devices arranged along the first acoustic linear antenna performs steps of: obtaining a local measurement of a feather angle or of a parameter linked to the feather angle, the local measurement being associated with the at least one of the navigation control devices arranged along the first acoustic linear antenna; computing a lateral force, as a function of the obtained local measurement; and applying the computed lateral force.

Abstract translation: 提供了一种方法和装置，用于转向属于由船舶拖曳的多个声线性天线的第一声线性天线。 沿着多个线性天线布置多个导航控制装置，以便至少在横向上作用于线性天线的位置。 沿着第一声线性天线布置的导航控制装置中的至少一个执行以下步骤：获得羽毛角度或与羽角相关联的参数的局部测量，所述局部测量与所述导航中的至少一个相关联 沿着第一声线性天线布置的控制装置; 计算横向力，作为获得的局部测量的函数; 并应用计算出的横向力。

公开(公告)号：US20240427296A1

公开(公告)日：2024-12-26

申请号：US18616979

申请日：2024-03-26

Applicant: SERCEL

Inventor： Christophe L'HER

IPC: G04G3/02 ,  G01V1/38

Abstract: A seismic data collection node has a clock for dating samples of seismic data and means for estimating a drift over time of a variable physical operating parameter of the clock. According to a predetermined non-linear law of variation of the variable physical operating parameter, the instantaneous frequency varies according to a polynomial equation of order greater than or equal to 2, such that a phase of the clock varies according to a polynomial equation of order greater than or equal to 3.