全球定位系统2026，Vol.51Issue(4)：3-9,7.DOI:10.12265/j.gnss.2026183
增强罗兰系统发展评述与一体化备份标准构建:从能力分析到体系框架
A review of eLoran system development and the construction of integrated backup standards:from capability analysis to system framework
摘要
Abstract
To address the vulnerability of GNSS to interference and spoofing,as well as the insufficient resilience of a single positioning,navigation and timing(PNT)system,and to meet the demand for high-reliability PNT services in critical industries,we investigated the backup support role and upgrade directions of Enhanced Long-Range Navigation(eLoran)within the national comprehensive PNT system.Taking the regional navigation anomaly event in Nanjing as a case study,we reviewed the technical principles and development status of eLoran.We analyzed its key bottlenecks from five aspects:signal structure,broadcasting capability,system architecture,device ecosystem,and management mechanisms.We proposed an upgrade pathway oriented toward"ubiquitous coverage,security and trustworthiness,and demand-driven services"and constructed an integrated backup standard.The results show that eLoran possesses advantages of high anti-interference capability,heterogeneous redundancy,and independent timing,enabling it to provide continuous and reliable backup PNT services when GNSS fails.Moreover,its integration with BeiDou Navigation Satellite System(BDS)and communication networks can form a multi-source collaborative spatiotemporal service system.We conclude that eLoran is a key technology for enhancing the security resilience of the national PNT system,and its systematic construction and industrialization are of significant strategic importance for building modern spatiotemporal infrastructure.关键词
增强型罗兰(eLoran)/GNSS 干扰/互补备份/定位、导航与授时(PNT)体系/多源融合Key words
Enhanced Long-Range Navigation(eLoran)/GNSS interference/complementary backup/positioning,navigation and timing(PNT)system/multi-source integration分类
天文与地球科学引用本文复制引用
吴苗,于婷译,李豹,邸建琛,李方能,李京书..增强罗兰系统发展评述与一体化备份标准构建:从能力分析到体系框架[J].全球定位系统,2026,51(4):3-9,7.基金项目
导航与时空技术国家级重点实验室自主科研课题(WXDHS202505) （WXDHS202505）
国家自然科学基金(52471386) （52471386）
