Familiarize yourself with these Common UAV Terms.
| Anisotropic | Directionally dependent perspective; surfaces do not appear the same from all angles. |
| Depth of Field (DoF) | The distance between the sharply focused closest and farthest objects; depth is determined by aperture size:
Larger aperture = smaller/shallower DoF Smaller aperture = larger/deeper DoF |
| Ground Control Points (GCP) | Reliably identified xyz surface coordinates used to precisely align a project to a known coordinate system; common for ground captures with insufficient GPS |
| Imager | Device used to capture photos (camera). |
| NADIR | Vertical, "top-down"; lens is perpendicular to the capture |
| Oblique | At an angle (any, just as long as not perpendicular); allows for a more extensive ground capture |
| Orthogonal | Involves right angles; linear. |
| Point of Interest (POI) | Point programmed into the flight which the UAV will automatically turn toward when flying between waypoints; typically allows for accurate observation of a ground-based structure. |
| Prime Lens | Lens with a fixed focal length; opposite of a zoom lens, which has a varying focal length. Related common terms include primary focal length and FFL. |
| UAV | Unmanned Aerial Vehicle. |
| UAS | Unmanned Aircraft System |
| Waypoint | Positional points that define the flight path (that is, the UAV flies from waypoint-to-waypoint). |