Abstract:Aiming at the problem of "suspicious" and missing data of precipitation observed by single rainfall sensor,a method of using multiple rainfall sensors to observe precipitation without affecting the existing collection method for the ground automatic observation is proposed.This method can carry out consistent calculation for the observed precipitation value per minute,and eliminate the observed abnormal precipitation value,and observed effective precipitation values were fused to ensure continuous and uninterrupted observation data to improve the continuity and credibility of precipitation observation.At the same time,this method also carries out consistent calculation when the precipitation accumulation reaches a certain value,and finds out the rainfall sensor with large precipitation deviation,which provides more reliable precipitation data for weather decision-making service,analysis of regional climate change and meteorological safeguard.