A Method for Generating Virtual Coordinates

Abstract

The invention discloses a method for generating virtual coordinates, comprising: step 1, determining a surveying and mapping work area, and judging the shape, when it is a planar area, enter step 2; when it is a strip area, enter step 3; step 2, determine the surface Determine the control points of the survey area along the edge line of the plane area, form the control point table of the survey area, select the minimum coordinate elevation point and the maximum coordinate elevation point in the control point table of the survey area, and determine the generation area of ​​the virtual control point. Generate a certain number of virtual control points; step 3, determine the center line of the strip area, determine the control points of the survey area along the center line of the strip area, form a control point table of the survey area, determine the generation area of ​​the virtual control points, and randomly generate a certain number of Virtual control point; Step 4, compose all the generated virtual control points into a virtual control point table. The beneficial effect of the invention is that the network transmission of secret coordinates and other secret surveying and mapping results is not affected under the condition that there is no real coordinate result table.

Description

technical field [0001] The invention relates to the technical fields of pipeline construction information security and surveying and mapping, in particular to a method for generating virtual coordinates. Background technique [0002] For the network transmission of confidential coordinates and other confidential surveying and mapping data files, the main method currently used is manual acquisition and transmission. The disadvantage of this transmission method is that the transmission speed is slow, the cost is high, real-time transmission cannot be realized, and files are prone to loss, damage and Theft and leakage, and cannot meet the needs of intelligent pipeline construction. At present, there is a method of using the surveying and mapping control point results table to generate an encryption password to encrypt the surveying and mapping results. For the transmission of coordinates, the relative relationship between the control points in the surveying and mapping control ...

AI Technical Summary

Problems solved by technology

But this method has certain limitations, that is, there is no result table of surveying and mapping control points in the early stage of control survey, even in the later stage of surveying and mapping, the number of control points is very small, and the confidentiality effect is not good

That is, the transfer of confidential coordinates by the network cannot be achieved or does not work well without the control measurement being completed and passed on to the relevant parties

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