3D POINT CLOUD
A densified point cloud is a set of 3D points that reconstruct a model. The X,Y,Z position and the color information is stored for each point of the densified point cloud.
The densified point cloud is computed based on the automatic tie points . A 3D point cloud provides you with a statistical and visual model, giving you better understanding of your project area.
DIGITAL ELEVATION MODELS
A digital elevation model is a bare-earth raster grid referenced to a vertical datum. When you filter out non-ground points such as bridges and roads, you get a smooth digital elevation model. The built (power lines, buildings and towers) and natural (trees and other types of vegetation) aren’t included in a DEM.
DIGITAL SURFACE MODEL
A DSM captures the natural and built features on the Earth’s surface. This can be used for vegetation management, for example, along a transmission line, DSMs can see where and how much vegetation is encroaching.
DIGITAL TERRAIN MODELS
A DTM is a vector data set composed of regularly spaced points and natural features such as ridges and breaklines. A DTM augments a DEM by including linear features of the bare-earth terrain.
Contours or a "contour line" joins points of equal elevation (height) above a given level, (for example, sea level).
the generation of contour maps can be of great value as It can show valleys and hills, and the steepness or gentleness of slopes.
RTK SURVEYS FOR XYZ ACCURACY
Real-time kinematic (RTK) positioning is a satellite navigation technique used to enhance the precision of position data derived from satellite-based positioning systems. This will give you more accurate data to work with and create models.