基于相控阵多普勒雷达技术的强对流天气预警系统设计  

Design of Severe Convective Weather Early Warning System Based on Phased Array Doppler Radar Technology

作　　者：付亚平 李芳 FU Yaping;LI Fang(Shanxi Atmospheric Exploration Technology Support Center,Taiyuan 030002,China;Shanxi Provincial Meteorological Disaster Prevention Technology Center,Taiyuan 030002,China)

机构地区：[1]山西省大气探测技术保障中心,山西太原030002 [2]山西省气象灾害防御技术中心,山西太原030002

出　　处：《微型电脑应用》2024年第4期214-217,共4页Microcomputer Applications

摘　　要：为了避免突发性灾害对人身以及财产安全造成的影响,针对天气预警过程的干扰因素较多、雷达成像像素精度较低等问题,设计基于相控阵多普勒雷达技术的强对流天气预警系统。设计数据采集芯片和电路混频器,通过不同的电压获取双通道接口的稳定运行。基于相控阵多普勒雷达技术,采集强对流天气数据并进行前期处理,通过多普勒雷达格式数据计算水平反射率结构以及梯度垂直反射率,避免干扰因素影响,计算最大模糊速度与最大模糊距离,得到雷达退速度模糊参数,建立强对流天气预警模型,得到一个新的强对流天气预警系统。实验结果表明,该系统所得到的不同径向距离以及不同方位角度的像素精度均小于0.03,提高雷达成像精度可以得到更准确地预警结果。To avoid the impact of sudden disasters on personal and property safety,a strong convective weather warning system based on phased array Doppler radar technology is designed to address the issues of multiple interference factors in the weather warning process and low pixel accuracy of radar imaging.Data acquisition chip and circuit mixer are designed to obtain the stable operation of dual channel interface through different voltages.Based on phased array radar Doppler technology,strong convective weather data and preliminary processing,we format Doppler radar data,compute reflectivity level structure and vertical gradient reflectivity,avoid interference factors,calculate maximum fuzzy speed and maximum fuzzy distance,get fuzzy parameters,radar speed back,thus,a strong convective weather early warning model is set up,which provide a new severe convection weather warning system.Experimental results show that the pixel accuracy of different radial distances and different azimuth angles obtained by the system is less than 0.03,which can improve the radar imaging accuracy and get more accurate warning results.

关 键 词：相控阵多普勒雷达技术 强对流天气 天气预警系统 危险天气识别 

分 类 号：TN06[电子电信—物理电子学]