Method for directly reconstructing SEGY data coordinates based on SEGY file and processing terminal

Abstract

The invention relates to a method for directly reconstructing SEGY data coordinates based on an SEGY file and a processing terminal. The method comprises the steps: 1, obtaining an SEGY file, wherein the geodetic coordinates of all measurement points are stored in the SEGY file; 2, converting the geodetic coordinates of each measuring point into plane coordinates; 3, determining a survey ship azimuth angle A corresponding to the current measuring point according to the coordinate of the current measuring point and the coordinate of the previous measuring point; 4, according to the survey ship azimuth angle A corresponding to the current measurement point and the offset of the reflection point relative to the current measurement point, obtaining the plane coordinate of the reflection point, and taking the coordinate of the reflection point as the corrected plane coordinate of the measurement point; and 5, converting the corrected plane coordinates of the measuring points into geodetic coordinates in the same format as the geodetic coordinates in the step 1, and completing reconstruction of SEGY data coordinates. According to the method, SEGY data coordinates can be corrected without a navigation file, less resources are occupied, and usability and practicability are high.

Description

technical field [0001] The invention relates to the technical field of SEGY data coordinate correction, in particular to a method for directly reconstructing SEGY data coordinates based on a SEGY file and a processing terminal. Background technique [0002] At present, the coordinates of the actual measurement of shallow stratum sections (referred to as shallow sections) and single-trace seismic records are the positions transmitted by the navigation and positioning equipment. This position is the position of the GPS antenna head or the navigation reference point, not the signal reflection point (referred to as the reflection point )s position. Due to the inaccurate position of the recorded coordinates, there are errors, which lead to difficulties in the subsequent interpretation of the seismic section, resulting in a discrepancy between the underground geological conditions inferred from the section and the actual situation, causing troubles or even unusable for subsequent ...

AI Technical Summary

Problems solved by technology

[0006] For the deficiencies in the prior art, one of the purposes of the present invention provides a method for directly reconstructing SEGY data coordinates based on SEGY files, which can solve the problem of correcting SEGY data coordinates without relying on other file data;

[0007] The second object of the present invention is to provide a processing terminal, which can solve the problem of correcting SEGY data coordinates without relying on other file data

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