Automatic rainfall station abnormal value screening method based on rainfall measuring radar data
A technology of automatic rainfall station and radar data, which is applied in the direction of measuring devices, data processing applications, structured data retrieval, etc., can solve the problems of strong sudden precipitation, finding rainfall data, and difficult automatic identification of large-scale and massive automatic stations.
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[0029] The technical solution adopted in the present invention is a method for automatic rainfall station anomaly screening based on rainfall radar data. The albedo judgment set is used as the space-time series two-dimensional criterion for abnormal stations in the process of measured precipitation. The second is to use the surface similarity matching algorithm to obtain the singular change values in the ground rainfall time series monitoring data, and extract the suspected ones in the space dimension. Abnormal sites, based on the similarity mining algorithm of time series data, obtain the similarity between the normalized time series data of rainfall stations and the time series data of surrounding stations and radar reflectivity grids, judge the rationality of the monitoring data of the stations in the time dimension, and based on the abnormality of the stations The characteristics determine the possible fault types of the site. Follow the steps below to implement:
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