Plain English Meaning
A radar that does not just see where something is, but also tells how fast it is moving toward or away from the radar. In weather use, this lets it detect wind motion inside storms, not just rain.
Full Definition
A type of radar that measures the frequency shift of returned radio signals to determine the speed and direction of moving targets, such as precipitation particles or wind. In aviation weather use, it detects motion within storms, allowing identification of wind shear, turbulence, rotation, and precipitation intensity.
Context Anchor
Seen in aviation weather reports and radar observation discussions, especially when pilots are looking at of precipitation, storms, or changing weather movement.