冰雪对大型数字阵列雷达测角精度影响分析  

Effect Analysis of Ice and Snow on the Angle Measurement Accuracy for Large-scale Digital Array Radar

作　　者：杨利民[1] 华煜明 何睿 程鹏飞 YANG Limin;HUA Yuming;HE Rui;CHENG Pengfei(The 38th Research Institute of China Electronics Technology Group Corporation,Hefei 230088 China;Beijing Institute of Tracking and Communication Technology,Beijing 100094,China;Aerospace Systems Department of the Strategic Support Force of the People's Liberation Army of China,Beijing 100080,China;Chinese People's Liberation Army 63768 Unit,Xi'an 710600,China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088 [2]北京跟踪与通信技术研究所,北京100094 [3]中国人民解放军战略支援部队航天系统部,北京100080 [4]中国人民解放军63768部队,陕西西安710600

出　　处：《现代信息科技》2023年第18期87-91,共5页Modern Information Technology

摘　　要：大型数字阵列雷达,通常需外建高透波率的罩体,起防雨、防风以及防尘等作用。对我国北部地区,常年近一半时间处于寒冷状态,罩体外侧若有较多积雪未及时清理,或积雪融化结冰,会对电磁信号产生折射,影响雷达探测稳定性和测角精度。文章以某大型数字阵列雷达为例,分析冰雪对电波传播的作用,并通过实测数据验证罩体冰雪对测角精度的影响,为天线罩积雪防护设计提供参考。Large-scale digital array radar,usually needs to build a high transmittance enclosure to protect against rain,wind and dust.For the northern region of China,it is in a cold state for nearly half of the year round.If there is too much snow covers the outer surface of the Radome and is not cleared in time,or snow melts and freezes,electromagnetic signal will be refracted and radar detection stability and angle measurement accuracy will be affected.This paper takes a large-scale digital array radar as an example to analyze the impact of ice and snow on radio wave propagation,and verifies the effect of cover ice and snow on angle measurement accuracy through the measured data,providing reference for the design of antenna cover snow protection.

关 键 词：数字阵列雷达 冰雪 测角 折射 

分 类 号：TN953.5[电子电信—信号与信息处理]