Submarine cable movement locus simulation method and system

Abstract

The invention relates to a submarine cable movement locus simulation method and system, and microsegmentation processing is performed on a cable and cable laying time, i.e., each microsegment partial(s) is a cable mass point, partial(t) represents a microsegment of cable laying time, force analysis of the cable mass points in a three-dimensional space is performed, and in combination with relationship of movement and force, a movement equation set of a function relationship of the microsegment partial(s) and time partial(t) in three directions in space is established; according to the movement equation set, an initial moment t0 and a moment t=(t0+partial(t)) correspond to position coordinates of each mass point on an underwater cable in the three-dimensional space; and according to the movement equation set, based on the position coordinates of each mass point on the underwater cable in the three-dimensional space that t0 and t=(t0+partial(t)) correspond to, position coordinates of each mass point on the underwater cable in the three-dimensional space at moment t=(t+partial(t)) are obtained, i.e., a movement locus of the underwater cable in a period of time is obtained.

Description

technical field [0001] The invention relates to the field of movement tracks of submarine cable seismic acquisition cables, in particular to a method and system for simulating the movement track of submarine cables. Background technique [0002] Adjusting the route of the cable ship by simulating the trajectory of the cable sinking and releasing, and improving the accuracy of one-time cable laying is a means of controlling the location of seismic acquisition receivers; at present, domestic research on the positioning of seismic acquisition receivers for OBC (Ocean Bottom Cable) It is more of a secondary positioning problem. The primary positioning is mainly based on the measurement of the navigation ship, and the cable deviation value is calculated according to the empirical formula to adjust the driving route of the cable ship, which cannot reflect the movement of the cable more scientifically and intuitively. [0003] AKAI Marine Engineering Company in Florida, USA began t...

AI Technical Summary

Problems solved by technology

However, the current domestic OBC marine seismic acquisition is still based on experience in the process of laying receiving cables, and there are great uncertainties and lack of scientific basis.

With the continuous expansion of OBC business, Party A's requirements are becoming more and more strict. In the absence of scientific guidance on cable laying methods, to ensure high-quality services, the only option is to rent or purchase technology and equipment from foreign companies. high price

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