PRECIPITATION PARTICLE DISCRIMINATOR, PRECIPITATION PARTICLE DISCRIMINATING METHOD, AND PRECIPITATION PARTICLE DISCRIMINATING PROGRAM

摘要

The precipitation particle discriminator includes a radar antenna and processing circuitry. The radar antenna is configured to acquire horizontally polarized reception signals and vertically polarized reception signals by transmitting and receiving horizontally polarized waves and vertically polarized waves, respectively, and the processing circuitry is configured to acquire information on radar reflectivity factors and information on differential reflectivity that are polarization parameters calculated based on the horizontally polarized reception signal and the vertically polarized reception signal, to generate distribution data indicative of relationship between the radar reflectivity information and the differential reflectivity information in a plurality of sampling ranges included in a discrimination target range, to calculate an evaluation value used for discriminating a type of precipitation particles based on the distribution data, and to discriminate the type of the precipitation particles existing in the discrimination target range based on the evaluation value.