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阵列天气雷达高分辨率强度场融合方法研究
叶开1, 杨玲1, 马舒庆2, 甄小琼1, 孙婧怡3
(1.成都信息工程大学;2.中国气象局气象探测中心;3.雷象科技(北京)有限公司)
Research on High-Resolution Intensity Field Fusion Method of Array Weather Radar
YE Kai1, YANG Ling1, MA Shuqing2, ZHEN Xiaoqiong1, SUN Jingyi3
(1.Chengdu University of Information Technology;2.Meteorological Observation Center of CMA;3.Rayshon Technology Co., Ltd.)
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投稿时间:2019-06-12    修订日期:2019-11-15
中文摘要: 阵列天气雷达是一种高时空分辨率的新型天气雷达,采用分布式相控阵技术探测强对流天气的精细化流场和强度场,为小尺度强对流天气研究提供了新技术及工具。本文提出一种高分辨率强度场融合方法:首先,计算每个方位向和仰角方向分辨率扩展系数,依次对强度值进行填充;然后将极坐标形式强度值转换成笛卡尔坐标;最后,对多个收发子阵强度值进行融合。利用模拟雷达探测来定性及定量地评价高分辨率强度场融合结果,验证了融合方法的有效性。通过分析了一次真实降水个例,证明了本文得到的100 m分辨率的强度场融合资料具有更为精细完整的回波结构。
Abstract:Array Weather Radar (AWR) is a novel weather radar with high spatial and temporal resolution, which can detect the fine flow field and intensity field of severe convection weather by employing a distributed phased array technology and provide a new technology and instrument for researching the small-scale weather systems. A high-resolution intensity field fusion method is proposed in this paper: firstly, resolution expansion factors for each azimuth and elevation direction are calculated, and the intensity is filled successively; then the polar intensity field is converted to Cartesian coordinates; Finally, the intensity field of different transmit-receive subarrays are fused. The objective evaluation of simulated small-scale severe convection detection is used to verify the performance of a proposed high-resolution fusion method. Through a case of real precipitation process, it is proved that 100 m intensity field fusion data obtained in this paper have a much detailed and complete echo structure.
文章编号:201906120247     中图分类号:P415.2    文献标志码:
基金项目:国家自然科学基金国家重大科研仪器研制(部委推荐)项目:面向动物迁飞机理分析的高分辨多维协同雷达测量仪(31727901)
引用文本:
叶开,杨玲,马舒庆,甄小琼,孙婧怡,0.[en_title][J].Meteor Mon,():-.
YE Kai,YANG Ling,MA Shuqing,ZHEN Xiaoqiong,SUN Jingyi,0.Research on High-Resolution Intensity Field Fusion Method of Array Weather Radar[J].Meteor Mon,():-.