高轨飞行器主动段双向测控陆基导航方案

Bidirectional TT&C Ground-Based Navigation Schemes for High-Orbit Aircrafts in Boost Phase

高轨飞行器主动段飞行过程中,倒置GPS导航等传统陆基导航方案存在资源需求高、导航精度差等问题。研究了地天地双向测控(TT&C)陆基导航方案和天地天双向测控陆基导航方案,建立了时序分析模型,阐述了天地天双向测控陆基导航方案的定位数据使用延迟约为地天地双向测控陆基导航方案的1/2。通过理论分析推导和仿真验证,对比了不同陆基导航方案的资源需求、导航精度及位置速度准确度。结果表明:双向测控陆基导航方案相比传统陆基导航方案对地面站资源需求少,导航精度高,且天地天双向测控陆基导航方案的位置速度准确度更高。

In order to solve the problems of high resource demand and poor navigation precision in traditional ground-based navigation schemes such as inverse-global positioning system(GPS)during geostationary orbit(GEO)or geostationary transfer orbit(GTO)powered phase,the ground-space-ground bidirectional telemetry tracking and command(TT&C)navigation scheme and the space-ground-space bidirectional TT&C navigation scheme are studied,and a time series analysis model is established.It is demonstrated that the delay of positioning data in the spaceground-space bidirectional TT&C navigation scheme is about half of that in the ground-space-ground bidirectional TT&C navigation scheme.Through theoretical analysis and simulation verification,the resource demand and navigation precision and accuracy of different ground-based navigation schemes are compared.The results show that bidirectional TT&C ground-based navigation schemes require less ground station resources and have higher navigation precision.Moreover,the space-ground-space bidirectional TT&C navigation scheme shows higher navigation accuracy.