The use of stellar aberration effect for aiding navigation of satellites in constellations
- Paper number
IAC-21,B2,IP,8,x63740
- Author
Dr. Muzi Li, China, Shanghai Aerospace Control Technology Institute (SACTI), Shanghai Academy of Spaceflight Technology (SAST)
- Year
2021
- Abstract
Stellar aberration, which causes the change of the apparent direction to a star, has been studied in great detail, both observationally and theoretically. In the paper, with the high-precision optical sensor, an autonomous navigation technique based on stellar aberration effect is studied. A new method based on pseudo-range observations from inter-satellite links together with the direction of observed stars is proposed to determine satellite orbits in the constellation. With the help of the balanced extended Kalman filter (BEKF), the position and velocity vectors of satellites can be estimated according to the measurements and orbit perturbation equations. A high performance of the method is illustrated though Monte-Carlo simulations in comparison with the traditional method based on pseudo-range observations. Final simulation results shows that the navigation precision is better than 100m.
- Abstract document
- Manuscript document
(absent)