Nano-digital terrain model
NANO DIGITAL TERRAIN MODEL HOW TO
Now, we will discuss how to generate the digital elevation model using google earth. Based on the applications or analysis, the resolution and accuracy of the DEM requirements will vary. Also, It helps to explore the earth’s landscape in 3D.
![nano-digital terrain model nano-digital terrain model](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fs41598-021-88238-z/MediaObjects/41598_2021_88238_Fig1_HTML.png)
In UE Belgiprozem Design Institute it is possible to apply for the service of drawing boundaries of registered land plots on topographic surveying of the area (topographic survey, geolayout). The Elevation Model is represented in 3D computer graphics, and it indicates the terrain of the earth.
![nano-digital terrain model nano-digital terrain model](https://www.mdpi.com/water/water-10-01308/article_deploy/html/images/water-10-01308-g001.png)
Unitary Enterprise Belgiprozem Design Institute is an enterprise certified to perform works as part of engineering and geodetic surveys. Parallel execution of works will reduce facility design time. In UE Belgiprozem Design Institute it is possible to order topographic survey of the terrain when applying for preparation of materials of preliminary coordination of the land plot location for construction of a facility. Topographic survey can be arranged both in paper and electronic form (digital terrain model is created). With its help it is convenient to design construction facilities, as it allows to reduce losses of woody plants to minimum. If construction works are carried out in areas where valuable and rare plants, shrubs and trees are located, it will be advisable to carry out a tree survey of the area. When performing field geodetic works, high-precision equipment is used, including satellite. The terrain is reproduced in all details, with the account of its relief.
![nano-digital terrain model nano-digital terrain model](https://www.mdpi.com/remotesensing/remotesensing-11-01096/article_deploy/html/images/remotesensing-11-01096-g011.png)
When large-scale topographic surveys are carried out, the plans reflect all elements of the terrain, in particular the contours of settlements, forests, lakes and rivers, as well as buildings and structures, roads and railways, engineering and transport lines. Topographic surveying is necessary when vertical surface planning and landscape design projects are carried out.
NANO DIGITAL TERRAIN MODEL UPDATE
It is carried out when it is necessary to update topographic maps and plans, to carry out engineering surveys, as well as in case of the development of projects for the construction of buildings and structures, preparation of general plans, working and layout drawings of various construction objects. Topographic survey of the terrain (topographic survey) is the most popular complex of geodetic works today that are performed on the ground and in office. A DTM forms the basis for modern highway location and design.Topographic survey of terrain, digital model of the area If horizontal cuts were made at certain elevation intervals, the cut lines when viewed from above would represent contours. If vertical cuts were made at right angles to the alignment at certain prescribed intervals, the side views of the cuts would represent cross-sections. If alignment was draped on the model and a vertical cut made along the line, a side view of the cut line would yield the alignment’s original ground profile.
![nano-digital terrain model nano-digital terrain model](https://www.mdpi.com/remotesensing/remotesensing-03-00845/article_deploy/html/images/remotesensing-03-00845-g006.png)
Also it can clearly be seen that DTM A is based on an interpolation and thus looks smoother than the reality. Both have the same spatial extent but different resolutions. Think of a DTM as an electronic lump of clay shaped into a model representing the terrain. Digital terrain model (DTM) derived from the 20 m contour lines (A) and the unmanned aerial vehicle imagery (B). You will also generate major and minor contour lines. Modern surveying and photogrammetric equipment enable rapid three-dimensional data acquisition.Ī computer processes the data into a form from which it can interpolate a three-dimensional position anywhere within the model. In this exercise, you will open a file containing 3D data (imported in the Importing ASCII Survey Files exercise above) and create a Digital Terrain Model (DTM). A digital Terrain Model (DTM) is a numerical representation of the configuration of the terrain consisting of a very dense network of points of known X, Y, Z coordinates.