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A global solution and positioning method for marine geophysical exploration

A positioning method and global technology, applied in the direction of seismology for areas covered by water, can solve the problems of low positioning accuracy, poor anti-multi-path interference effect, etc., to achieve improved accuracy, simple method and clear principle. Effect

Active Publication Date: 2019-05-24
CSSC SYST ENG RES INST
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  • Application Information

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Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the existing technology, to propose a global solution positioning method applied to marine geophysical prospecting, to avoid the existing underwater multi-cable acoustic network positioning system with poor anti-multi-channel interference effect and low positioning accuracy. High disadvantage, improve the accuracy of positioning solution

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  • A global solution and positioning method for marine geophysical exploration
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  • A global solution and positioning method for marine geophysical exploration

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Embodiment Construction

[0039] The present invention proposes a global solution positioning method applied to marine geophysical prospecting, and provides a new multi-frequency real-time data acquisition method and global solution method. First, polling is determined according to the networking mode of the underwater multi-cable acoustic network positioning system The solution uses a global solution algorithm to locate the position of each water bird. The advantage of the multi-frequency real-time data acquisition technology of the present invention is that all transmitting and receiving water birds can work at the same time, which greatly improves the efficiency of the streamer system and shortens the positioning solution. It uses a global solution algorithm to reduce the positioning error.

[0040] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0041] The offshore streamer system generally consists of 3 to 4 streamers, and the...

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Abstract

The invention proposes a global calculation positioning method applied to marine geophysical prospecting, and provides a novel way of multi-frequency real-time data acquisition and a global calculation method. First, a polling scheme is determined according to the networking mode of an underwater multi-cable acoustic network positioning system. Then, the location of each water bird is positioned by use of a global calculation algorithm. The multi-frequency real-time data acquisition technology of the invention has the following advantages: all transmitting water birds and receiving water birds can work at the same time; the efficiency of a towing system is improved greatly; the time for positioning calculation is shortened; and the positioning error is reduced by use of the global calculation algorithm.

Description

Technical field [0001] The invention relates to a global solution positioning method applied to marine geophysical prospecting, and belongs to the field of multi-cable acoustic network positioning in marine seismic streamer systems. Background technique [0002] Underwater multi-cable positioning technology is a key technology in offshore seismic exploration technology. Accurate streamer positioning can ensure high 3D seismic imaging accuracy, and provide a reliable basis for subsequent development plans. However, since the length of the streamer reaches thousands of meters in the acquisition of marine seismic data, its position changes from time to time due to the influence of ocean currents, and the depth of the streamer is relatively shallow, the impact of the sound reflected on the sea surface during the sound propagation process is obvious. [0003] The existing technology analyzes the principles, characteristics and key technologies of underwater multi-cable positioning in o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/38
CPCG01V1/38
Inventor 华波颜晗高菲李遥陈国才韦佳利宋明玉
Owner CSSC SYST ENG RES INST