大气折射对雷达测角的影响  

Influence of Atmospheric Refraction on Radar Angle Measurement

作　　者：宋伟[1] 宋凯 武伟[2] SONG Wei;SONG Kai;WU Wei(No.92941 Troops of PLA,Huludao 125000;The 20th Research Institute of CETC,Xi'an 710000)

机构地区：[1]92941部队,葫芦岛125000 [2]中国电子科技集团公司第二十研究所,西安710000

出　　处：《舰船电子工程》2024年第9期78-82,共5页Ship Electronic Engineering

摘　　要：在雷达测角精度计算时,大气折射会对其产生巨大影响,这一影响会成为对雷达系统性能的制约性因素。针对这一问题,论文研究分析了电磁波在对流层中的折射模型,并对电磁波的传播特性提出了两种假设:电磁波在大气中进行传播时,是按照圆弧曲线和非圆弧曲线的方式进行的。基于这两种假设,论文采用了两种不同的修正方法,并通过试验对这种修正方法进行了验证。试验结果表明,两种修正方法都能够提高雷达的测角精度,且按照非圆弧修正方法进行修正的效果更好。该研究对于理解大气折射对雷达测角的影响具有重要意义,为提高雷达系统性能提供了技术支持。The atmospheric refraction effect has a serious influence on the accuracy of radar angle measurement and is an important factor restricting the performance of radar system.In order to solve this problem,the refraction model of electromagnetic wave in the troposphere is studied in this paper,and two hypotheses are put forward for the propagation characteristics of electromagnetic wave.When electromagnetic waves propagate in the atmosphere,they follow both circular and non-circular curves.Based on these two hypotheses,two different correction methods are adopted in this paper,and the correction methods are verified by experiments.The test results show that the two correction methods can improve the accuracy of radar angle measurement,and the correction effect is better according to the non-arc correction method.This study is of great significance for understanding the influence of atmospheric refraction on radar angle measurement,and provides technical support for improving the performance of radar system.

关 键 词：大气折射效应 雷达测角精度 误差修正 圆弧曲线传播 非圆弧曲线传播 

分 类 号：TN011.3[电子电信—物理电子学] P412[天文地球—大气科学及气象学]