CoAuthors

Jean-Pierre Chauveau (Akka I&S, France)

Keywords : DORIS, DIODE, Earth Pole Coordinates, Real-Time, On-Board, Navigation


ABSTRACT :

As presented in Constance (2014), Earth Pole coordinates estimates are computed by the
recent versions of the on-board software : DIODE has been refined and is now able
to produce an estimation in real-time. These data are sent to the ground system
through new telemetry packets (the Auxiliary Data) and this in a few hours delay.

These estimations may be interesting to produce a Near-Real-Time estimation,
or to initialize longer delay adjustments.
Ground mixing of the results of 2 satellites may help refining these estimates.

This presentation shows results of operational real-time computations performed
on-board Jason-3 and Sentinel-3A since their launch at the beginning of 2016.

Results are compared with IERS estimations. Discrepancies are being analysed
and future trends are discussed