Abstract
The dependence of the optical precipitation gage calibration results on the size of reference objects is analyzed. Ways to optimize the calibration procedure are suggested, including: reducing the number of calibration zones; use of calibration coefficients instead of correction parameters; additional calibration with balls 1 mm in diameter; use of the coefficients dependent on the diameter measured for particles smaller than 2 mm. The conclusion is drawn about the efficiency of the calibration procedure suggested for optoelectronic devices designed to measure the size of small particles, for example, a snowstorm parameter gage.