卫星编队相对探测自主定轨：可观测性分析与优化
Autonomous orbit determination for satelite formations using relative sensing: observability analysis and optimization
摘要：
在轨航天器的轨道确定主要依赖于全球导航卫星系统卫星信号或地面站遥测。然而，这两种方法都有其局限性：全球导航卫星系统信号只能在地球轨道上有效使用，地基轨道确定存在固有的延迟，随着地球-航天器距离的增加而增加。对于航天器飞行编队，另一种不依赖外部信号的轨道确定方法是通过编队内航天器的相对定位历史观测航天器相对于中心体的位置。在本文中，相对定位方法的潜力被证明在日出任务的背景下，并与任务的先前提出的轨道确定方法进行比较。然后进行优化研究，以找到新的航天器在编队中的最佳位置，以最大限度地提高系统的定位精度。最后，还研究了在保持系统可观性的同时去除部分相对方位测量的可能性。由此产生的系统被发现是可观察的，但病态的。
英文摘要：
Orbit determination of spacecraft in orbit has been mostly dependent on either GNSS satellite signals or ground station telemetry. Both methods present their limitations, however: GNSS signals can only be used effectively in earth orbit, and ground-based orbit determination presents an inherent latency that increases with the Earth-spacecraft distance. For spacecraft flying formations, an alternative method of orbit determination, independent of external signals, consists in the observation of the spacecraft's position with respect to the central body through the relative positioning history of the spacecraft within the formation. In this paper, the potential of the relative positioning method is demonstrated in the context of the SunRISE mission, and compared with the mission's previously proposed orbit determination methods. An optimization study is then made to find the optimal placement of a new spacecraft in the formation so as to maximize the positioning accuracy of the system. Finally, the possibility of removing part of the system's relative bearing measurements while maintaing its observability is also studied. The resulting system is found to be observable, but ill-conditioned.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
