A new approach in hail detection and prevention

A New Approach in Hail Prevention Technique for a Locally Restricted Area

“…Corresponding thresholds values in Volts depend on structure and technical parameters of utilized radiometric receivers (6) and (15) and may be defined from the results of theoretical estimations or from the results of experimental measurements and calibrations. "Maximum", "minimum" and "alert" thresholds levels may be corrected and may be changed individually during the exploitation of the anti-hail protection system (1) by controlled thresholders (8), (17) and (24).…”

“…The far-range radiometric receiver processes received signals and outputs to the input of far-range compensation device (7) a signal corresponding to a sum of powers of signals of external emissions (sky, surrounding, external interfe- rence) and internal noises. The far-range compensation device compensates a part of the incoming signals corresponding to clear air condition of sky observation and outputs remainder of the signals to the input of single-channel thresholder (8). The single channel thresholder compares the remainder of the signals with the "minimum" threshold level and outputs the signal "1" to the input of the far-range warning device (9), if its input signal exceeds the "minimum" threshold and the signal "0" otherwise.…”