What is a "Digital Terrain Model"? The Most Authoritative Explanation.

What is a "Digital Terrain Model"? The Most Authoritative Explanation.

What is Digital Terrain Modeling (DTM)?

Digital terrain modeling (DTM), also known as digital elevation modeling, is the practice of creating a digital representation of ground topography and terrain.

How do you get a digital terrain map?

There are many ways to obtain the information shown in a digital terrain map. Often this data is obtained using remote sensing equipment rather than direct surveying methods. Radar satellites are often used for creating models of large areas of terrain.

What is the difference between digital terrain model and unmanned aerial vehicle imagery?

Absolute difference in altitude between the digital terrain model (DTM) interpolated from the contour lines and the DTM acquired from the unmanned aerial vehicle imagery. Negative values (dark blue) indicate an over prediction from the interpolation of the contour lines. Positive values indicate an under prediction. Rutzinger Martin, ...

What is the difference between digital terrain model and surface model?

A digital terrain model usually includes only the Earth’s surface, excluding vegetation as well as buildings or other man-made features. This is sometimes referred to as a bare-earth model. A digital surface model, by contrast, shows these features in addition to the natural terrain.

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  A Beginner’s Guide to Digital Elevation Models (DEMs): Data Sources and More

  2023-03-22

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