Automatic Identification, Tracking And Motion Forecasting Of VIL Heartland

VIL is calculated based on the volume-data of Doppler weather radar. The connection between VEL and precipitation is analysized. VIL heartland is regarded as the tool of precipitation heartland in identification, tracking and motion forecasting.In identification of VIL heartland, there threshold-value is used, such as VIL kernel threshold-value, reference original threshold-value and area threshold-value. The method of gradually increasing original threshold-value is employed in identification. The peculiarity of identification is area threshold-value which is used to identify VIL heartland. The location of VIL heartland is orientated by its barycenter.In tracking, method of motorial forecasting on area-ratio is employed, which roots in improved area-ratio. Method of classification and mass-conservation principle is also employed in tracking. Across-heartland is introduced which is similar to disparted group. In motion forecasting, motion velocity is calculated by heartland or across heartland through method of sqyare-center. Many motion velocity in recent different time is composed through method of vector compound. The heading of composed velocity and average heading of those velocity is linearly integrated. The method of linear extrapolation is employed to linearly forecast the locatin and motion velocity of VIL heartland.The correlated software is programed by ourself, which include function of all above method and function of well automatization. The result shows VIL possess nicer conservative quality and these method can be useful tool for the identification, tracking and motion forecasting of VIL heartland. The software has friendly interface, high automatization of running, short period of running and better stability. It is simple to operate this software. It could be used in real time and be applied abroadly.