Daily Archives: April 27, 2017

Concept and Applications of Digital Elevation Model (DEM)

A digital elevation model (DEM) is a digital model or 3D representation of a terrain’s surface — commonly for a planet (including Earth), moon, or asteroid — created from terrain elevation data. In most cases the term digital surface model represents the earth’s surface and includes … Continue reading

Posted in Class Notes, earth, GIS, Remote Sensing 101 | 1 Comment

Surveying : Dumpy Level- Importance and Use

What is Surveying? Knowing about the relative position of various objects, determination of distances between them, measurement of angles, measurement of height, determination of boundaries and relative heights of various points come under the purview of surveying. It is very … Continue reading

Posted in Class Notes, earth, Geography Practicals/Lab and Statistical Techniques | Leave a comment