摘要
与传统SINS/GNSS松、紧组合相比,SINS/GNSS超紧组合导航系统利用SINS辅助GNSS接收机跟踪环路,能够大大提高组合导航系统在高动态、强干扰等恶劣环境中的信号跟踪能力和导航性能,具有广阔的应用前景。本文系统分析了SINS/GNSS超紧组合导航系统中SINS性能对GNSS接收机跟踪性能的影响程度,可为实际SINS/GNSS超紧组合导航系统方案设计和器件精度选择提供理论依据。首先,基于SINS/GNSS超紧组合导航系统的工作原理,通过建立SINS辅助GNSS跟踪环路的数学模型,得到了SINS辅助GNSS跟踪环路的系统传递函数;通过理论推导SINS辅助GNSS跟踪环路的动态跟踪误差和环路等效带宽,得到了SINS性能与GNSS跟踪环路动态性能和抗干扰性能之间的定量关系。进一步,通过仿真验证了SINS/GNSS超紧组合导航系统中SINS性能对GNSS跟踪环路动态性能和抗干扰性能的影响程度。验证结果表明,在高动态、强干扰环境中,SINS辅助GNSS跟踪环路能够降低76%以上的动态跟踪误差和84%以上的环路噪声,大大提升GNSS接收机跟踪环路的动态性能和抗干扰性能。
Compared with the conventional SINS/GNSS loose and tight integration,the SINS/GNSS ultra-tight integration navigation system employs SINS aided GNSS receiver tracking loop.The ultra-tight integration significantly enhances the signal tracking capability and navigation performance of the integration navigation system under high-dynamic and strong-interference environments,demon⁃strating broad application prospects.This paper systematically analyzes the effects of SINS perfor⁃mance on GNSS receiver tracking performance within the SINS/GNSS ultra-tight integration navigation system,which can provide a theoretical foundation for practical scheme design and component preci⁃sion selection in SINS/GNSS ultra-tight integration navigation system.Firstly,based on the operation principle of the SINS/GNSS ultra-tight integration navigation system,this study establishes a math⁃ematical model of the SINS-aided GNSS tracking loop,yielding its system transfer function.By theo⁃retical deducing the dynamic tracking error and equivalent loop bandwidth for the SINS-aided GNSS tracking loop,the quantitative relationships between SINS performance and GNSS tracking loop's dynamic and anti-interference performance is obtained.Furthermore,the effects of SINS performance on the GNSS tracking loop's dynamic and anti-interference performance within the SINS/GNSS ultratight integration navigation system are validated by simulations.Validation results demonstrate that the SINS-aided GNSS tracking loop reduces the dynamic tracking error by more than 76%and the loop noise by more than 84%in high dynamic and strong interference environments,significantly enhancing both the dynamic and anti-interference performance of the GNSS receiver tracking loop.
作者
蔺靖杰
王新龙
Lin Jingjie;Wang Xinlong(School of Astronautics,Beihang University,Beijing 100083,China;Key Laboratory of Spacecraft Design Optimization and Dynamic Simulation Technology,Ministry of Education,Beijing 100083,China)
出处
《航空兵器》
北大核心
2026年第1期108-117,共10页
Aero Weaponry
基金
国家自然科学基金项目(61673040)
航空科学基金项目(20170151002)
天地一体化信息技术国家重点实验室基金项目(2015-SGIIT-KFJJ-DH-01)。
关键词
超紧组合
SINS
GNSS
接收机跟踪性能
动态性能
抗干扰性能
ultra-tight integration
SINS
GNSS
receiver tracking performance
dynamic perfor⁃mance
anti-interference performance
