Speaker
Mr
Yann Duchemin
(IMCCE, Obs. de Paris/PSL Research University)
Description
The future of space missions will be dependent on the improvement of autonomous celestial space navigation methods. Nowadays the deep space exploration uses the starry sky background for attitude determination by imaging and determining the coordinates with an embedded star catalog. Two different approaches are necessary in order to find the position of an interplanetary spacecraft. The first one when you have an approximation of the position using the latest position known, and second, the most complicated when you are lost in space. To achieve these goals we need to have an accurate model of the space environment with usable targets at any time, namely planets and asteroids in the good frame reference. The ephemerides must be computed before the mission with the goal to estimate the number of objects usable for the position determination by the use of a 3D positioning algorithm. In a first step, our method proposes to use the virtual observatory ephemeris to know the number of visible useful objects and to determine the resulting accuracy of the calculated position of the space probe. The next step will be the making of a simulation allowing to determine the parameters to be improved in order to get a more accurate position of the probe.
| Applicant type | First author |
|---|
Primary author
Mr
Yann Duchemin
(IMCCE, Obs. de Paris/PSL Research University)
Co-authors
Prof.
Jean-Eudes Arlot
(IMCCE, Obs. de Paris/PSL Research University)
Dr
Jérôme Berthier
(IMCCE, Obs. de Paris/PSL Research University)
Dr
Valery Lainey
(IMCCE, Obs. de Paris/PSL Reasearch University)
