Error when using KalmanEstimator to estimate Ephemeris

[bcazabonne]

I’m sorry for my late reply, but the KalmanEstimator should work with an ephemeris propagator. There is a unit test class showing it: src/test/java/org/orekit/estimation/sequential/EphemerisKalmanEstimatorTest.java · release-12.0 · Orekit / Orekit · GitLab
In addition, there is another forrum thread talking about that.

Estimate Measurement Parameters in the Unscented Kalman Model

Hello! Thank you very much for your prompt response @bcazabonne! I’ve tried using the Extended Kalman Filter; however, a similar issue arises since there are no orbital parameters to estimate in the SemiAnalyticalKalmanModel.java. You can see that an error (matrix must have at least one row) will occur as there are no orbital parameters to estimate. // Initialize inverse of the orbital part of the state transition matrix this.phiS = MatrixUtils.createRealIdentityMatri…

Best regards,
Bryan