[Orekit Users] Kalman Filter

[<w.grossman@ieee.org>]

I am trying to "reverse engineer" the OreKit Kalman filter orbit estimator.  I
am very familiar with Kalman Filters but a newbie to OreKit.  Specifically, I
am trying to understand what parameters are being estimated beyond the PV or
orbit elements.  I find it a bit difficult to work through the implementation.

Do you have any papers or literature you can point me to that served as the
basis for the design?  What was the performance of the design?

Thanks.