Rainstorm Early Warning Method in Coastal Areas Based on Doppler Radar Detection Technology
Relying on a single beam reflectance characteristic information,the proportion of false alarm in early warning results is relatively high.Therefore,a rainstorm early warning method in coastal areas based on Doppler radar detection technology is proposed.The Doppler radar detection technology is used to capture the reflection factor of the radar beam,extract the hidden radial convergence parameters,obtain the comprehensive weather radar data,and correct the data through the regression veloc-ity ambiguity method.Taking the gradient descent algorithm as the core,the target meteorological data are inversed and ana-lyzed.The rainstorm cloud cluster is identified by TITAN algorithm,and the radar echo feature matching method is established to clarify the rainstorm cloud cluster state.Finally,the rainstorm index is calculated by WSR-88D detection algorithm to realize rainstorm early warning in coastal areas.The results show that the false alarm ratio of the proposed method is reduced by 17％and 24％,and the rainstorm early warning in coastal areas is completed accurately.
Doppler radar detection technologycoastal arearainstorm early warninginversion algorithmradar echo
万方数据
维普
