DETERMINING POSITION OF SEISMIC EQUIPMENT IN A TOWED SEA GROUP Russian patent published in 2020 - IPC G01V1/38 

FIELD: geophysics.

SUBSTANCE: invention can be used in marine seismic survey operations. Disclosed is system (100) for determining position in marine seismic survey, comprising towing vessel (110), group (120) of sources and group (130) of receivers with several towed braids (131). Each towed brace (131) comprises at least three position controllers (134) and position sensors (134–137), wherein several seismic detectors (132) are placed between each pair of position controllers (134). System (100) comprises a dynamic model, in which each towed brace (131) is represented by a selected B-spline curve and each position controller (134) is associated with constant speed and constant acceleration; and a Kalman filter using the dynamic model and observations from position sensors (134–137) to obtain the geodetic position of each seismic receiver (132) with better accuracy compared to provided only dynamic model and only observations within the time interval Δt, equal to or less than minimum time between explosions, determined by source group (120).

EFFECT: technical result is obtaining accurate geodetic positions of all seismic sources and receivers during the interval of each explosion.

10 cl, 2 dwg