page_title: Plan position indicator
hierarchical_section_title: Plan position indicator
context_page_description: A plan position indicator is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and height above ground drawn as concentric circles. As the radar antenna rotates, a radial trace on the PPI sweeps in unison with it about the center point. It is the most common type of radar display.
context_section_description: A plan position indicator (PPI) is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and height above ground drawn as concentric circles. As the radar antenna rotates, a radial trace on the PPI sweeps in unison with it about the center point. It is the most common type of radar display.
caption: Image of a thunderstorm line (in dBZ) seen on a 0.7-degree elevation PPI (NOAA)
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