Road survey and design method based on high-resolution satellite image

Abstract

The invention discloses a road survey and design method based on a high-resolution satellite image, which comprises the following steps: A, determining a scope to be covered by a satellite image according to a route scheme, selecting a high-resolution satellite and a sensor for collection, and designing and collecting three-dimensional images of the high-resolution satellite; B, when a scale of 1 to 2,000 is formed, laying and measuring field ground control points and laying control points along the route; C, generating a digital ground model, a digital orthophotomap and a digital line topographic map for the road route area through area adjustment of the three-dimensional images of the high-resolution satellite based on rational polynomial parameters of the images of the high-resolution satellite; and D, calculating engineering quantities and generating route design drawings and tables through measurement of the high-resolution satellite and collaborative design of the road CAD. The invention realizes the measurement of the high-resolution satellite and the collaborative design of the road CAD, thereby greatly reducing the field workload, shortening the survey and design period, and producing significant 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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