GNSS Sensor for Autonomous Orbit Determination
GNSS Sensor for Autonomous Orbit Determination
复制标题
DOI：
--
复制
发表时间：
2010-09
期刊：
影响因子：
--
通讯作者：
J. Lorga;P. Silva;A. Cintio;F. Dovis;S. Kowaltschek;D. Jiménez;R. Jansson
中科院分区：
文献类型：
--
作者：
J. Lorga;P. Silva;A. Cintio;F. Dovis;S. Kowaltschek;D. Jiménez;R. Jansson
使用GNSS空间接收机进行自主轨道确定正受到越来越多的关注，因为与一个星跟踪器相关联时，减少了地面操作并改善了指向性能，从而实现了重要的经济和操作效益。然而，利用全球导航卫星系统在全球导航卫星系统星座以外的轨道上导航卫星，尚未得到航天器设计者、制造商和运营商的充分接受。随着GPS的现代化和即将到来的伽利略系统以及不断发展的接收机技术，必须彻底评估在地球静止轨道和更高轨道上使用GNSS的可行性，因为与陆地用户接收机相比，涉及的因素数量及其对导航性能的影响是显著的。介绍了GNSS接收机和轨道滤波器在不同任务、环境和接收机结构下自主定轨的可行性和主要预期性能。在专门的测试活动中，使用软件仿真工具提出并详细研究了影响导航性能的最关键因素。然后给出了测试活动的主要结果，说明了不同GNSS传感器配置下GEO/GTO和HEO轨道可实现的性能。所提出的结果表明，随着伽利略和GPS现代化的出现，GNSS接收机技术的使用为自主定轨提供了新的可能性和卓越的性能，为下一代GEO或HEO轨道上的空间用户提供了重要的经济和运营效益
The use of GNSS space receivers for autonomous orbit determination is receiving increasing interest due to the important economical and operational benefits made possible by the reduced on-ground operations and the improved pointing performance when associated to one Star Tracker. However, the exploitation of GNSS for navigating satellites in orbits beyond the GNSS constellations has not yet gained full acceptance among spacecraft designers, manufacturers and operators. With GPS modernization and upcoming Galileo as well as with evolving receiver technologies, the feasibility for the use of GNSS in geostationary and higher orbits must be thoroughly assessed as the number of factors involved and its impact on navigation performance is significant when compared to land user receivers. This paper describes the feasibility of GNSS receiver and Orbital Filter for Autonomous Orbit Determination and the main expected performances under different missions, environment and receiver architectures. The most critical factors affecting navigation performance are presented and studied in detail using a Software Simulation Tool in a dedicated test campaign. Main results of the test campaign are then presented, illustrating the achievable performances for GEO/GTO and HEO orbits under the different GNSS sensor configurations. The presented results show that the usage of GNSS receiver technologies with the advent of Galileo and GPS modernization offer new possibilities and superior performance for autonomous orbit determination, promising important economical and operational benefits for next generation of space users in either GEO or HEO orbits