WEATHER RADAR CALIBRATION BY MEANS OF THE METALLIC SPHERE AND MULTIPARAMETER RADAR MEASUREMENTS

Absolute calibration is an important task in order to obtain reliable and accurate measurements of radar observables and derived meteorologi cal parameters. In this paper two procedures are described; the first one is based on measuring the power received from a metallic sphere an d the second utilizes the rainfall estimates obtained by the multipara meter radar measurements. The accuracy of the latter method is studied in detail from the simulation of the dual polarization measurables. T he theoretical results are compared with radar measurements relative t o a rain event.