Weather radars send directional pulses followed by a waiting time to “listen” to return signals to determin if echos are coming back from precipitations. Only Doppler radars can detect with certainty the presence of small in a cumulonimbus.
These radars have a cost of several million Euros, which use solutions as part of an anti-hail protection?
In order to have a local weather picture, you can buy a low cost weather radar which will allow you to start your anti-hail devices only when there is a high POH (Probability Of Hail).
This weather equipment is an X-band radar system and not a Doppler system, which is why it is the least expensive weather detection equipment on the market. The false alarm rate is higher but detection thresholds can be adjusted in accordance with user expectations and can be calibrated to detect specific meteorological conditions.