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plan position indicator
radar display
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radar displays
- In radar: Displays
…used radar display is the plan position indicator (PPI), which provides a maplike presentation in polar coordinates of range and angle. The display is “dark” except when echo signals are present.
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work of Page
- In Robert Morris Page
…patent on the widely used plan position indicator (PPI) radar display, which provides the location and direction of a target on a maplike presentation that is easy to interpret. Page conceived and initiated the first successful demonstration of high-frequency over-the-horizon (HF OTH) radar, whose propagating waves are refracted by the…
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