What does PPI stand for in radar terminology?

In radar terminology, PPI stands for Plan Position Indicator. This term refers to a specific type of radar display that represents targets in a two-dimensional format. The PPI screen illustrates a bird's-eye view of the area being monitored, presenting targets based on their range and azimuth from the radar antenna. This is particularly useful for both air and maritime navigation, providing operators with a clear graphical representation of object locations relative to the radar system.

The significance of a PPI lies in its ability to allow operators to easily interpret and analyze the situational environment. It's a fundamental tool in radar technology, widely used in air traffic control, maritime radar systems, and military applications for tracking and surveillance purposes.

The other terms listed, while they may reference radar concepts, do not accurately define the widely recognized term PPI in the context of radar displays.