摘要
利用天气雷达准确而快速地识别强风暴一直是进行强天气预警的关键组成部分。针对目前多普勒天气雷达探测强风暴方法在实际应用中存在的问题 ,提出了利用单 PPI资料进行强风暴识别的方法 ,在综合利用多普勒天气雷达强度场、速度场、谱宽场资料及缩短探测时间方面进行了尝试。应用实际资料进行的效果检验表明 :与现有强风暴识别方法相比 ,单 PPI识别方法的结果准确率达 87.5 % ,虚警率为 2 2 .2 % ,同时具有节省探测时间、快速发布警报的优点。
How to detect severe storm accurately and rapidly using weather radar is a key element of severe weather forecasting. In the Storm Cell Identifying algorithms now used in Doppler weather radar system, velocity and spectrum width data are not used and this algorithm requires much time to detect storm. In light of these two problems, a single PPI identifying algorithm is developed. The result from PPI algorithm to process real Doppler radar data compared with storm cell identifying algorithm as truth shows: single PPI identifying algorithm can identify 87.5% severe storm and its false alarm rate is 22.2%. Meanwhile, it needs less detecting time.
出处
《解放军理工大学学报（自然科学版）》
EI
2003年第3期82-85,共4页
Journal of PLA University of Science and Technology(Natural Science Edition)
关键词
多普勒天气雷达
强风暴
风暴识别
Doppler weather radar
sever storm
storm identifying
