GNSS多星座组合导航系统性能提升量化分析

为定量研究不同层次GNSS多星座组合系统的性能提升情况，构建相应的量化指标，并对多星座组合系统的性能提升进行量化分析。通过仿真实验验证量化指标的有效性，分析组合系统性能提升随组合层次和截止高度角的变化规律，推出各层次的最优系统组合。实验表明，高层次多星座组合系统不仅改善了单一、低层次多星座组合构型的不足和缺陷，还在很大程度上提升了星座的各项性能指标。

Quantitative Analysis of Performance Improvement of GNSS Multi-Constellation Integrated Navigation

For quantitatively researching the performance improvements of different levels of the GNSS multi-constellation integrated navigation system, this paper constructs the corresponding quantitative indicators to analyze the performance improvements of the system quantitatively. Through a simulation experiment, it verifies the validity of indexes, and analyzes the rule of the performance improvements of the system, along with combination levels and cut-off elevation angle changes, and proposes the optimal system combination at all levels. The paper demonstrates that the high-level of the multi-constellation system not only improves the flaws of single and low-level configurations, but it also largely enhances the performance of constellation.