The characteristics of the correlation coefficient (cross correlation coefficient; ρ hv ), the measured differential propagation phase Ψ dp (r) or the differential propagation phase Φ dp , and the SNR of the input signal, (SNR), correlation coefficient (ρ hv ), and correlation coefficient (ρ hv ) as initial input data (variables) through radar electromagnetic wave transmission and reception data. Obtaining the measured differential propagation phase (Ψ dp (r)), identifying the melting layer, calculating the melting layer altitude and distribution characteristics (melting depth or thickness: melting depth) after separating the melting layers, A fuzzyfication step of calculating two fuzzy values (a fuzzy function value) using a two-dimensional fuzzy function having a relationship of (ψ dp ) -SNR relation and a 10 ρhv -SNR relation, and before the two two-dimensional fuzzy values (σ (Ψ dp) -SNR, 10 ρ hv -SNR according to the relationship (RS)) among the inference values of the respective objects to obtain the inference value for each object using the fuzzy function value (fuzzy function value) A method for classifying a precipitation body using an X-band dual-polarity radar is disclosed.
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