Add support for Intelsat's 11 elements propagation
The ITU-R defines a standard for the propagation of the “Intelsat’s 11 elements”. Those elements are used by some ground operators for geostationary satellites. The format is available here: https://www.itu.int/dms_pubrec/itu-r/rec/s/r-rec-s.1525-0-200106-s!!pdf-e.pdf
The idea of propagating Intelsat’s 11 elements for geostationary satellites is close to GNSS almanac propagation for navigation satellites: No orbital perturbations in the equations, only elements to PV conversion.
The propagator shall extend AbstractAnalyticalPropagator
.
This propagator in available in STK. We can validate the Orekit-based implementation with STK. We can also use some Intelsat data to validate it.