Global calculation positioning method applied to marine geophysical prospecting
A positioning method and global technology, which is applied in the seismology and other directions of areas covered by water, can solve the problems of low positioning accuracy and poor anti-multi-path interference effect, and achieves improved work efficiency, simple method, and shortened positioning. Effect of solve time
Active Publication Date: 2017-03-15
CSSC SYST ENG RES INST
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[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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[0040] The present invention proposes a global solution positioning method applied to marine geophysical prospecting, provides a new multi-frequency real-time data acquisition method and a global solution method, and first determines polling according to the networking mode of the underwater multi-cable acoustic network positioning system Scheme, using the global solution algorithm to locate the position of each waterfowl, the advantage of the multi-frequency real-time data acquisition technology of the present invention is: all the transmitting waterfowl and receiving waterfowl can work simultaneously, which greatly improves the efficiency of the tow cable system and shortens the positioning solution time. The calculation time is reduced by using the global solution algorithm to reduce the positioning error.
[0041] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail,
[0042] The offshore towline system...
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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 and positioning method applied to marine geophysical prospecting, and belongs to the field of multi-cable acoustic network positioning in a marine seismic towing cable system. Background technique [0002] Underwater multi-cable positioning technology is a key technology in marine seismic exploration technology. Accurate streamer positioning can ensure high accuracy of 3D seismic imaging and provide a reliable basis for the formulation of subsequent development plans. However, in the acquisition of marine seismic data, the length of the towed cable reaches several thousand meters, and its position changes from time to time due to the influence of ocean currents, and the depth of the towed cable is relatively shallow, so the influence of the reflected sound from the sea surface is obvious during the sound propagation process. [0003] The prior art has analyzed the principle, characteristics and key technologi...
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Login to View More 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