天气雷达实时回波省级直显系统设计与应用  

Design and Application of Provincial Direct Display System for Real-time Echo of Weather Radar

作　　者：张德玉 秦三杰[2] 魏荣妮 张强 王遂缠 ZHANG De-yu;QIN San-jie;WEI Rong-ni;ZHANG Qiang;WANG Sui-chan(Zhangye Meteorological Bureau,Zhangye 734000,China;Department of Observation and Network,Gansu Meteorological Bureau,Lanzhou 730020,China;Gansu Meteorological Information and Technical Equipment Support Center,Lanzhou 730020,China)

机构地区：[1]张掖市气象局,甘肃张掖734000 [2]甘肃省气象局观测与网络处,甘肃兰州730020 [3]甘肃省气象信息与技术装备保障中心,甘肃兰州730020

出　　处：《计算机技术与发展》2024年第11期21-28,共8页Computer Technology and Development

基　　金：中国气象局气象探测中心观测试验项目(GCSYJH23-23);甘肃省气象局气象科研项目(Zd2022-02,Zd2024-A-1)

摘　　要：天气雷达实时回波所见即所得的特性在气象业务工作中发挥着不可替代的作用。受技术条件限制,实时回波只能在雷达本站或本级气象台接收使用。该文分析了实时回波难于在大范围共享使用的主要原因,总结了目前主流解决方案的弊端,并提出省级直显系统设计实现思路与方法:以天气雷达径向流传输业务为支撑,从径向流传输的省级节点上采集雷达实时数据,实现与原雷达系统的彻底解耦;在云端建立Linux集群,向全网用户转发雷达实时数据,转发时采用分段式多线程内存压缩传输技术,既保障实时性又降低网络宽带占用;客户端从集群获取实时数据,经解压缩还原后完成回波的可视化。2022年4月,该系统在甘肃省气象信息与技术装备保障中心部署成功,并向全省提供8部C波段和7部X波段共15部天气雷达的实时回波直显服务,实现了省级范围内多部天气雷达实时回波的集中接收和直接显示。The WYSIWYG characteristic of real-time weather radar echoes plays an irreplaceable role in meteorological operations.Limited by technical conditions,real-time echoes can only be received and used at the radar station or the weather station at the same level.We analyze the main reasons why real-time echoes are difficult to be shared in a wide range,summarize the drawbacks of the current mainstream solutions,and put forward the design and implementation of the provincial direct display system:based on the weather radar radial flow transmission service,the real-time radar data is collected from the provincial node transmitted by the radial flow to achieve complete decoupling from the original radar system;the Linux cluster is set up in the cloud to forward the real-time radar data to the whole network users,and the segmented multi-thread memory compression transmission technology is adopted to ensure real-time performance and reduce the network broadband occupation.The client obtains real-time data from the cluster,decomposes and restores it to complete the visualization of echoes.In April 2022,the system was successfully deployed in the Meteorological Information and Technical Equipment Support Center of Gansu Province,and provided real-time echo direct display services of 15 weather radars in 8 C-band and 7 X-band to the province,realizing the centralized reception and direct display of real-time echoes of multiple weather radars within the provincial scope.

关 键 词：天气雷达 实时回波 径向流传输 内存压缩 回波直显 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] P412.25[自动化与计算机技术—计算机科学与技术]