L波段雷达高度差报警阈值的研究与建议  

Research and suggestion on alarm threshold of L-band radar altitude difference

作　　者：沈晔 徐志刚 马玮骏 Shen Ye;Xu Zhigang;Ma Weijun(No.95871 Unit of Radiosonde Teaching and Research Section,Hengyang 421001;Nanjing Jinshui Shangyang Information Technology Co.,Ltd,Nanjing 210046)

机构地区：[1]95871部队探空教研室,衡阳421001 [2]南京金水尚阳信息技术有限公司,南京210046

出　　处：《气象水文海洋仪器》2021年第4期1-4,共4页Meteorological,Hydrological and Marine Instruments

基　　金：国家自然科学基金(61371119,快速响应卫星动态组网与数据传输控制技术研究)资助.

摘　　要：针对当前L波段雷达设置的高度差报警阈值在理论和实际应用中存在的不合理情况,文章重点分析了雷达高度、气压高度以及高度差的定义,在理论上探讨了高度差值报警的原理,分析了高度差报警阈值随仰角、斜距的变化关系,并结合邵东气象台不同季节的球坐标数据,分析了高度差报警阈值的应用案例及存在的不足,最后给出了L波段雷达高度差值报警的改进建议。At present,the altitude difference alarm threshold set by L-band radar is unreasonable in theory and practical application.This paper focuses on the definition of radar height,air pressure height and height difference.The principle of altitude difference alarm is discussed in theory,and the relationship between altitude difference alarm threshold and elevation angle and slant distance is analyzed.And combined with the spherical coordinate data of Shaodong meteorological station in different seasons,the application cases and shortcomings of altitude difference alarm threshold are analyzed.Finally,the improvement suggestions of L-band radar altitude difference alarm are given.

关 键 词：L波段雷达 高度差 报警阈值 

分 类 号：P414.1[天文地球—大气科学及气象学]