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ESOC Fast Delivery (SLR + Altimetry) vs. CNES Intermediate Orbit (MOE)

The CNES Orbit Solution is the intermediate solution (MOE) and is based on DORIS doppler data and has a delay of ~3 days. The ESOC solution is based on Altimetry and SLR data and has a delay of 1 day. The ESOC solution has an estimated (RMS) radial precision of around 4 cm and ~15 cm in along and cross track direction. The ESOC solution has a degraded performance for March 2004 due to unavailability of certain geophysical corrections on the altimeter for this month.

The following plot shows the along-track, cross-track and radial components of the comparison between the CNES and the ESOC solution.