全球定位系统2025，Vol.50Issue(6)：81-89,9.DOI:10.12265/j.gnss.2025107
基于双天线切换阵列的陆基导航频段干扰源测向定位
Direction finding and localization of interference sources in ground-based navigation bands with a dual-antenna switched array
摘要
Abstract
To address the issue of civil aviation ground-based navigation equipment being interfered with in multiple frequency bands,this study conducts research on direction finding and positioning of multi-band interference signals.Based on the existing GNSS interference direction finding system developed by the laboratory research group,the measurable frequency bands are expanded,and a ground-based navigation band interference source direction finding and positioning system based on a dual-antenna switching array is designed and implemented.The system adopts three pairs of dual-antenna arrays with different spacings,which can quickly switch arrays according to the working frequency band to achieve cross-band interference direction finding.To ensure the direction finding accuracy and stability of the system,a dual-channel phase consistencycompensation algorithm based on self-calibration is proposed and implemented,which significantly reduces the direction finding errors caused by non-ideal hardware characteristics.Inan open experimental site,interference sources are set to transmit different types of interference signals within multiple ground-based navigation frequency bands.Experimental tests show that the system has reliable positioning capability and good stability,which is of great significance for building a more robust civil aviation navigation anti-interference system.关键词
陆基导航系统/多频段干扰/干扰源定位/双天线切换阵列/相位一致性Key words
ground-based navigation system/multi-band interference/interference source localization/dual-antenna switched array/phase consistency分类
天文与地球科学引用本文复制引用
胡铁乔,郭庆..基于双天线切换阵列的陆基导航频段干扰源测向定位[J].全球定位系统,2025,50(6):81-89,9.基金项目
科技部国家重点研发计划(2023YFB3907003) （2023YFB3907003）
