公开(公告)号：US20190235117A1

公开(公告)日：2019-08-01

申请号：US16326401

申请日：2017-10-02

Applicant: POLARCUS DMCC

Inventor： Erik GODØY ,  Gary WINFIELD

IPC: G01V1/38 ,  G01V1/00 ,  G01V1/20

CPC classification number: G01V1/3835 ,  G01V1/006 ,  G01V1/20 ,  G01V1/3808 ,  G01V1/3817 ,  G01V1/3826

Abstract: A positioning system (100) for marine seismic surveying, comprising a towing vessel (110), a source array (120) and a receiver array (130) with several streamers (131). Each streamer (131) comprises at least three birds (134) and positioning sensors (134-137) wherein several seismic receivers (132) are placed between each pair of birds (134). The system (100) comprises a dynamic model wherein each streamer (131) is represented by a fitted B-spline curve and each bird (134) is associated with a constant velocity and a constant acceleration; and a Kalman filter using the dynamic model and observations from the positioning sensors (134-137) to provide a geodetic position of each seismic receiver (132) with better accuracy than the dynamic model alone and observations alone within a time interval Δt equal to or less than a minimum time between shots determined by the source array (120).