Patent ID: 11935191
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The data processing method, as recited in claim 1, wherein in the step 2), a two-dimensional coordinate system is established for the initial velocity field data collected in the analogue modelling experiment of the hypergravity geological structure; each feature point in the initial velocity field data has a start point two-dimensional plane coordinate where a time step begins and a displacement from a start point to an end point within the time step; wherein a correction method for each feature point comprises steps of:
I, according to the start point two-dimensional plane coordinate and the displacement of the feature point, calculating an end point two-dimensional plane coordinate of the feature point;
II, according to the start point two-dimensional plane coordinate and the end point two-dimensional plane coordinate of the feature point and three-dimensional elevations of the start point and the end point, respectively calculating a start point plane coordinate offset difference and an end point plane coordinate offset difference caused by the curved model surface;
III, according to the start point two-dimensional plane coordinate and the end point two-dimensional plane coordinate, and the start point plane coordinate offset difference and the end point plane coordinate offset difference calculated in the step II, respectively calculating two-dimensional plane coordinates of orthographic points corresponding to the start point and the end point;
IV, according to the two-dimensional plane coordinates of the orthographic points of the start point and the end point calculated in the step III and known surface arc equation as well as arc length formula of the top surface of the curved table, respectively calculating a corrected start point two-dimensional plane coordinate and a corrected end point two-dimensional plane coordinate; and
V, according to the corrected start point two-dimensional plane coordinate and the corrected end point two-dimensional plane coordinate, calculating a corrected displacement of the feature point;
wherein the corrected velocity field data of the feature point are finally obtained by combining the corrected start point two-dimensional plane coordinate and the corrected displacement of the feature point.