What is the Plan Position Indicator (PPI) display used for?

• A. It shows target positions as angle and distance around the radar site.
• B. It shows target positions as range and azimuth around the radar site.
• C. It displays weather intensity on a map.
• D. It lists antenna maintenance status.

Answer: (B)

The Plan Position Indicator is a plan-view radar display that shows where targets are located in the horizontal plane relative to the radar. It plots each return by range (distance from the radar) and azimuth (direction from the radar), placing the radar at the center and often with range rings to gauge distance. This creates a top‑down, map-like view of all targets around the site, which is exactly what “target positions as range and azimuth around the radar site” describes. It’s not about weather intensity maps or maintenance status, which are different display purposes.