FIELD: radio location meteorology.
SUBSTANCE: sizes of hail particles are measured by means of two-wave meteorological radar. Radio location probing of atmosphere is carried out within area of precipitation. Radio location reflectivity is determined at wavelengths of 3,2 cm and 10 cm, which equals to η3,2 and η10. Sizes of hail particles is calculated by relation of d3=4,54(η3,2/η10) -0,502, where 4,54 and -0,502 are empiric coefficients. Path of melting of hail particles is determined by radio location method when particles move in atmosphere from zero isotherm level down - H (km). Sizes of hail particles to be found is determined by multiplication of calculated value d3 by correcting multiplier K, found from relation of K=Ha(η3,2/η10)bH, where a=-0,247 and b=0,055.
EFFECT: improved precision of measurement.
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