The Radar Echo Classifier (REC) is a data fusion system that uses fuzzy-logic techniques to estimate the type of scatterer measured by the WSR-88D. The REC consists of three algorithms: the AP Detection Algorithm (APDA) classifies AP ground clutter return, the Precipitation Detection Algorithm (PDA) classifies precipitation regions, and the Sea Clutter Detection Algorithm (SCDA) classifies return from the ocean surface. The APDA is deployed within the RPG.
Currently, the APDA is used as a quality control flag for the Enhanced Precipitation Preprocessing (EPRE) hydrological algorithm to remove ground clutter contamination during construction of the Hybrid Scan Reflectivity (HSR). The HSR is input into the radar-derived rainfall calculation. The PDA has been ported to the RPG Common Operating Development Environment (CODE) and modifications have been made to EPRE. The EPRE now uses outputs from both the APDA and the PDA to better discriminate between precipitation and clutter return. Preliminary results show that, with these modifications, the HSR has higher quality and contains less clutter contamination. These results will be discussed.