Image of a thunderstorm line (in dBZ) seen on a 0.7-degree elevation PPI (NOAA)Diagram showing the evolution of the height above ground, in kilometers, with the distance to the radar for the 24 PPI angles used on the Canadian weather radars (curved lines)
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.
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A planpositionindicator (PPI) is a type of radar display that represents the radar antenna in the center of the display, with the distance from it and...
The constant altitude planpositionindicator, better known as CAPPI, is a radar display which gives a horizontal cross-section of data at constant altitude...
it was attached to. They were also known as "moving spot indicators" or "flying spot indicators" in the UK, the moving spot being the target blip. Range...
one angle at a time, the first way of displaying it has been the PlanPositionIndicator (PPI) which is only the layout of radar return on a two dimensional...
international, in railways Picks per inch, a unit of textile measurement Planpositionindicator, radar display Polymethylene polyphenylene isocyanate Italian People's...
War II. This includes storage tubes used with plannedpositionindicator displays, range height indicator displays, and pen-plotting boards used for civilian...
contact accurately, giving the set a vast expansion to include future positions, given unchanged relative courses and relative speeds. A CIC in a naval...
ability to display collision assessment information directly on the PlanPositionIndicator (PPI), using vectors (true or relative) or a graphical Predicted...
bands. The transmission formed a line of Morse characters on a planpositionindicator (PPI) radar display which radiated from the centre of the display...
equipment such as the radio compass receiver, compass indicator, or the radar planpositionindicator. All of these require users to obtain certain knowledge...
range up to 30 miles. This was the first Royal Navy radar with a plan-positionindicator. Further development led to the Type 277 radar, with almost 100...
A performance indicator or key performance indicator (KPI) is a type of performance measurement. KPIs evaluate the success of an organization or of a particular...
can occur at any time of the day or year). Preparing a family emergency plan, for example, can save valuable time if a storm arises quickly and unexpectedly...
character radiating away from the location of the beacon on the normal planpositionindicator radar display. The length of the line usually corresponds to the...
airborne radar of World War II. It used rotating antennae and a PPI (PlanPositionIndicator) display to allow its use for ground mapping. Although only a handful...
cyclone-like radar signatures over land when located with a low angle planpositionindicator (PPI). In the lightning detection system, lightning holes (uncovered...
waveguide between the radar transceiver and the antenna. In a typical planpositionindicator (PPI) radar with a rotating antenna, this will usually be seen...
naval centimetric target indication radar, later fitted with a planpositionindicator. Type 271 had separate transmit and receive aerials, small "cheese"...
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