论文标题
贸易空间分析GNSS空间细分架构
Tradespace analysis of GNSS Space Segment Architectures
论文作者
论文摘要
全球导航卫星系统（GNSS）在世界范围内提供无处不在，连续和可靠的定位，导航和定时信息。但是，GNSS空间段设计决策基于在70年代设计的前体全球定位系统（GPS）。鉴于重大技术进步和新的GNSS环境威胁，本文重新审视了那些早期的设计决策。探索了用户导航错误（UNE）性能与星座部署成本之间的丰富贸易空间，并通过灵敏度分析和关联规则挖掘来补充结论。这项研究发现，在〜2地球半径的轨道高度处的星座可以在成本，稳健性和UNE方面胜过现有的GNSS。在设计子孙后代时，应考虑这些见解。
Global Navigation Satellite Systems (GNSS) provide ubiquitous, continuous and reliable positioning, navigation and timing information around the world. However, GNSS space segment design decisions have been based on the precursor Global Positioning System (GPS), which was designed in the 70s. This paper revisits those early design decisions in view of major technological advancements and new GNSS environmental threats. The rich tradespace between User Navigation Error (UNE) performance and constellation deployment costs is explored and conclusions are complemented by sensitivity analysis and association rule mining. This study finds that constellations at an orbit altitude of ~2 Earth radii can outperform existing GNSS in terms of cost, robustness and UNE. These insights should be taken into account when designing future generations of GNSS.
