雷达平板天线风力矩数值仿真分析研究  

Numerical Simulation Analysis of Wind Moment of Radar Flat-panel Antenna

作　　者：陈超朋 张雷亭 CHEN Chaopeng;ZHANG Leiting(High-end Elctronic Equipment Industrial Design Center,the 20th Research Institute of CETC,Xi'an 710068,China)

机构地区：[1]中国电子科技集团公司第二十研究所高端电子装备工业设计中心,陕西西安710068

出　　处：《电子机械工程》2024年第4期10-13,27,共5页Electro-Mechanical Engineering

摘　　要：风载荷是影响雷达伺服系统的稳定性能、瞬态性能及稳定误差的重要外载荷。文中利用数值仿真分析方法对雷达平板天线进行风力矩系数计算,并结合试验数据探究平板天线在不同方位角及俯仰角下的风力矩系数变化规律。研究发现,雷达平板天线的方位风力矩系数随着方位角的增大先减小后增大,俯仰风力矩系数随着俯仰角的增大整体呈逐渐减小的趋势,两种风力矩系数的绝对值均随着镂空度的增大而减小。某雷达天线阵面俯仰风力矩的数值仿真结果与风洞试验的误差为8.7%,且力矩方向与试验一致,说明该风载荷数值仿真方法可用于类似平板天线的风载荷计算。Wind load is an important external load that affects the stability performance,transient performance and stability error of the radar servo system.This paper uses numerical simulation analysis methods to calculate the wind moment coefficient of the radarflat-panel antenna,and explores the variation rule of wind moment coefficient offlat-panel antenna at different azimuth and pitch angles based on experimental data.It is found that as the azimuth angle increases,the azimuth wind moment coefficient of the radarflat-panel antennafirst decreases and then increases;as the pitch angle increases,the pitch wind moment coefficient shows an overall decreasing trend.Moreover,the absolute values of both wind moment coefficients decrease as the hollowness increases.The error of pitch wind moment of a radar antenna array between the numerical simulation results and the wind tunnel test is 8.7%,and the moment direction is consistent with the test.This shows that the wind load numerical simulation method can be used to calculate the wind loads of similarflat-panel antennas.

关 键 词：雷达平板天线 风力矩系数 数值仿真 风洞试验 

分 类 号：TN957.2[电子电信—信号与信息处理]