基于线性动校正的海上定位数据与地震数据质控技术OA

With the continuous progress of exploration technology,exploration methods are becoming abun-dant,and marine seismic data acquisition methods are becoming more complex.Seismic data acquisition of submarine cables and nodes is highly favored due to its flexible and versatile construction methods.Linear motion correction is a commonly used method for checking near offset positioning data in the seismic data ac-quisition process of submarine cables and nodes.During the production process,the offset corresponding to different shot points is calculated by picking up the linear motion correction corresponding to the jump time of different shot points,and the real coordinate of the detection point is recalculated by using the offset and shot point coordinates,which is called the first arrival wave secondary positioning.When the positioning da-ta is accurate,the simultaneous axis of the first arrival wave is corrected to a fixed position.Once the acqui-sition system is not synchronized,the position of the same direction axis will also occur time shift,and the synchronization of the acquisition system can be controlled by whether the time shift occurs in the same di-rection axis of the first arrival wave.Most of the linear motion correction data selected are direct wave data with strong energy and stable waveform.The linear motion correction data with fixed time window is selected to draw pie chart,which can be used to check whether the polarity of the detector is correct.