This paper investigates the use of the Time Of Arrival (TOA) and Doppler shift to allow a small formation of CubeSats to navigate beyond low Earth orbit (LEO). The idea is to use a one way communication, from one or more ground station to two or more CubeSats, to reconstruct an estimation of the position and velocity of the formation with respect to Earth. The paper considers the use of the difference in TOA and Doppler measurements to mitigate the error introduced by the onboard clock. These measurements are combined with inter-satellite distance and velocity measurements based on a two-way communication between pairs of spacecraft. The paper will provide an estimation of the error in position and velocity that can be obtained by a combination of these measurements. The reference case for these analyses will be a mission to the Moon.
|Number of pages||20|
|Publication status||Published - 19 Jun 2017|
|Event||9th International Workshop on Satellite Constellations and Formation Flying - University of Colorado Boulder, Boulder, United States|
Duration: 19 Jun 2017 → 21 Jun 2017
Conference number: 9
|Conference||9th International Workshop on Satellite Constellations and Formation Flying|
|Period||19/06/17 → 21/06/17|
- autonomous navigation
- formation flying
- time of arrival (TOA)
- Doppler shift
- low Earth orbit
- space missions
Vasile, M., Torre, F., Serra, R., & Grey, S. (2017). Autonomous orbit determination and navigation for formations of CubeSats beyond LEO. Paper presented at 9th International Workshop on Satellite Constellations and Formation Flying, Boulder, United States.