A highway survey and design method based on high-resolution satellite images

Abstract

The invention discloses a road surveying and design method based on high-resolution satellite images. The steps are: A. According to the route plan, determine the range to be covered by satellite images, select high-resolution satellites and sensors for collection, and design high-resolution satellites Stereoscopic image acquisition. B. When the results with a scale of 1:2,000 are generated, the field ground control point layout and measurement are carried out, and the control points are laid out along the route. C. Based on the rational polynomial parameters of high-resolution satellite images, the block adjustment of high-resolution satellite stereoscopic images is carried out, and the digital ground model, digital orthophoto map and digital line-drawing topographic map of the highway route area are generated. D. Collaborative design of high-resolution satellite survey and highway CAD, calculate the quantity of the project, and generate route design diagrams and tables. The invention realizes the collaborative design of high-resolution satellite measurement and road CAD, greatly reduces the workload in the field, greatly shortens the survey and design cycle, and has remarkable economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of highway survey and design, and more specifically relates to a highway survey and design method based on long strips of high-resolution satellite images, which is suitable for highway survey and design in areas with difficult and complex surfaces or special geographical locations. Background technique [0002] At present, highway survey and design are usually based on the method of aerial photogrammetry, that is, according to the route plan, digital images with a certain degree of overlap within the scope of the route corridor are obtained through aerial photography, and then carried out on the digital photogrammetry workstation using field image control measurement results. The internal aerial triangulation is encrypted, and after data processing, digital ground models, digital orthophoto maps, digital line-drawn topographic maps and other products are obtained, and road route design is carried out on this...

AI Technical Summary

Problems solved by technology

In areas with inconvenient transportation and harsh environments, it is often difficult or even impossible to obtain ground control points

[0004] Second, aerial photography is difficult

The function, quantity and distribution of control points are not explained, which cannot meet the requirements of road design, especially the requirements of road survey and design in difficult and complex areas

[0009] 2. Lack of practicability, cumbersome process and low efficiency

Generating digital elevation models and digital orthophotos twice is not only cumbersome, but also greatly affects work efficiency and practical operability

[0010] 3. Lack of accuracy indicators

There is no description of the actual accuracy of satellite image generation products, and it is impossible to determine which road survey and design stage is applicable

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