Covariance matrix frame

[bcazabonne]

Hi @an-gorb

Welcome to the Orekit forum.
Sorry for the late answer.

@an-gorb

Are my suggestions correct?

Yes, they are.

@an-gorb

And if so, how it connects with covariance matrix parameters frames? Am I getting diagonal blocks of parameters in different frames? And how I should interpret off-diagonal blocks in this situation? And is it possible to transform full covariance matrix to, say, some ECEF frame?

Elements in the covariance matrix depend on the frame used to estimate the different parameters. Could I recommend you the paper: Covariance Transformations for Satellite Flight Dynamics Operations It is very useful to understand covariance transformations. It is available here.

Best regards,
Bryan