Definition
A piece of ATC radar equipment that overlays a map onto the controller's radar display, showing features such as runways, airways, navigation aids, obstructions, and minimum vectoring altitudes alongside the radar returns from aircraft.
Plain English
A device that draws a map on the controller's radar screen so they can see where aircraft are in relation to runways, airways, and other important features.
Context Anchor
Seen in discussions of ground-based radar navigation and radar approaches. The pilot does not operate the unit; it is part of the controller’s radar display system.
Derivation
"Video" here refers to the electronic image on the radar screen, not television. Combined with "mapping," it means the unit that paints map information onto the radar video display.
Why Pilots Care
Improves situational awareness by letting pilots and controllers match radar returns to actual chart features during vectoring and position identification.
Analogy
It is like placing a clear airport diagram over a radar screen, so the moving aircraft target can be compared with fixed runway and approach references.
Intuition Check
Do not read “video” as a camera picture. Here it means the visual image on a radar display. Do not read “mapping” as a pilot’s moving-map GPS. This is a controller-side radar map overlay.
Example Sentence 1
The video-mapping unit displayed the airport's runways and approach paths on the controller's radar screen.
Example Sentence 2
With the video-mapping unit active, the controller could quickly correlate the target with nearby terrain features.