Auxiliary field lofting method based on Google Earth

Abstract

The invention relates to an auxiliary field lofting method based on Google Earth. The auxiliary field lofting method based on Google Earth comprises the following steps: picking up Google Earth Mercator projection coordinate values, carrying out correlation calculation, carrying out regression fitting, and calculating Mercator projection coordinate values corresponding to coordinates X and Y of a point to be lofted. According to the method, Google Earth software is used for visually interpreting high-grade control points in a construction area and extracting coordinate values; a function relationship between the advanced control point coordinates of the construction area and the visually interpreted coordinate values is established. After the coordinates of the point to be lofted after calculation are marked in the Google Earth, the position information of the specific point to be lofted can be mastered, the conventional lofting efficiency can be improved, and the purposes of shortening time and saving cost are achieved.

Description

technical field [0001] This application relates to a field stakeout method, especially an auxiliary field stakeout method based on Google Earth. Background technique [0002] In the field of water conservancy and hydropower projects, because most of the construction areas are mountains and rivers with complex terrain, for landslides that may occur in landslides, monitoring equipment will be arranged at the corresponding parts for observation. [0003] Before starting construction, it is necessary to stake out according to the construction coordinates provided by the design drawings, and the construction can only be carried out after the position is determined. Stake out on. [0004] Due to the wide distribution of target points and complex geographical elements such as shrubs, houses, and cuttings around them, the construction drawings simply represent the terrain in the form of contour lines. When using the whole station to stake out, it is difficult for the caster to plan...

AI Technical Summary

Problems solved by technology

[0004] Due to the wide distribution of target points and complex geographical elements such as shrubs, houses, and cuttings around them, the construction drawings simply represent the terrain in the form of contour lines. When using the whole station to stake out, it is difficult for the caster to plan in advance , can only mechanically direct the runners to gradually approach the point to be determined, and it is very difficult for the runners to run in the actual environment full of various geographical elements

[0005] Due to the remote location, commercial navigation software such as Baidu map and Gaode map do not provide maps with high accuracy and can be used directly, which cannot meet the needs of such scenarios

If you use a commercial satellite positioning system, such as RTK, etc., or use a professional remote sensing satellite base map or a UAV aerial survey base map, in the case of a small number of stakeout points and a small range of stakeout, the project expenditure is undoubtedly not worth the candle.

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