Radar imageries information extraction and its use in pre-hail estimation algorithm

摘要

A comprehensive Doppler Weather Radar (DWR) image processing tool has been developed and its use in Pre Hail Detection Algorithm (PHDA) is tested and validated. For hail control operation, the information needed to be extracted from Region of Interest (ROI) and Point of Interest (POI) of radar imageries are reflectivity (for Available Reaction Time 'ART' calculation), time and co-ordinates (for direction and speed calculation) which are the inputs to PHDA. This paper focuses mainly to extract these information and store them in proper data base so that they can be efficiently processed by PHDA. The information is stored in an 'Excel file' so that any required information can be retrieved and analyzed immediately by PHDA to produce the result. The entire process provides an automatic environment for PHDA operation and working.