Radar meaning

The Local Radar base reflectivity product is a display of echo intensity (reflectivity) measured in dBZ (decibels). “Reflectivity” is the amount of transmitted power returned to the radar receiver after hitting precipitation, compared to a reference power density at a distance of 1 meter from the radar antenna .

The radar sensor measures distances, movements, and velocity. The sensor calculates the distance to an object by measuring the reflection of a high-frequency signal from that object . The transmitted signal is reflected by buildings, liquids, and so on.

In this example, the average power is 1 kilowatt. The average power, rather than the peak power, is the measure of the capability of a radar system. Radars have average powers from a few milliwatts to as much as one or more megawatts, depending on the application.

Radar provides an alternative means of measuring rainfall over an area . Radars designed specifically to detect precipitation are being used in- creasingly by meteorological services throughout the world.