About POD of Jason3 satellite

[ice-eggs]

Dear GROOPS team,
When using the official GRACE-FO LEO satellite kinematic orbit determination example XML for Jason-3 kinematic orbit determination, I used the reduced dynamic orbit published by IFG on January 1, 2022 as the initial approximate orbit, simulated the corresponding attitude data, and combined it with the Jason-3 onboard GPS observation data downloaded from Aviso (ftp://ftp -access.aviso.altimetry.fr/geophysical-data-record/doris/jason-3/gps_rinex/) for kinematic orbit determination. The final orbit determination results were compared with the reduced dynamic orbit published by IFG, and the results are shown in the figure. It can be seen that there are obvious systematic errors. What causes this and how can I solve it?

My XML configuration is as follows:（Except for data input, almost no changes have been made.）






Thank you very much in advance for your time and I am looking forward to your feedback.
Best regards,
Guan

[Hanbing59]

Have you ever tried to compare the suggested configurations related to different models from IFG (I am not sure but guess, probably they published their processing strategies on their websites) with that from the example XML file provided by GROOPS for GRACE-FO?