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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 ...
The constant altitude plan position indicator, better known as CAPPI, is a radar display which gives a horizontal cross-section of data at constant altitude. It has been developed by McGill University in Montreal by the Stormy Weather Group [1] to circumvent some problems with the PPI: Altitude changing with distance to the radar.
This image shows a modern PPI display in use, with the islands and ground surrounding the ship in green. The current direction of the radar can be seen as the dotted line pointing northwest. The PPI display provides a 2-D "all round" display of the airspace around a radar site. The distance out from the center of the display indicates range ...
AN/APQ-100 is the replacement for the AN/APQ-72, and it featured a redesigned radar scope in the rear cockpit that offered a plan position indicator (PPI) mapping display option, and adjustable range strobe for bombing. For air-to-ground missions, the radar interfaced with the inertial platform on F-4s. [7]
The giant size of a Pyr make it necessary to be careful during training to make sure they understand how powerful they are and how capable they are of causing damage without meaning to.
For example, consider a radar with a beam width of one degree and an antenna that rotates once every ten seconds, or 36 degrees per second. An object will be painted by the beam for only 1/36 of a second as the one-degree beam sweeps over it. If the radar has a PRF of 500, the object will be painted with 14 pulses per scan at most.
An affidavit previously obtained by the local news stations stated that Jacob left his girlfriend's house, saying he was going to have dinner with his family.
A 60-year-old animal lover was beaten to death with a pipe on Christmas Eve while trying to save a dog that was being abused by a neighbor, witnesses said.