Kozai

Satellite pass prediction and ground station control.

The pieces fit together in this order:

1. TLE / OMM parse orbital elements.
2. SGP4 propagates them to a position and velocity in the TEME frame.
3. Frames and Observer turn that into look angles for a place on Earth.
4. Passes searches those look angles for passes over the horizon.
5. Sun and Illumination say which of those passes can be seen by eye.
6. Watchlist narrows them to the station's own satellites, and Schedule decides which of the survivors the antenna actually works.
7. Doppler, Transponders, Rotator and Radio act on the result.
8. Catalog, Config and Api wrap it all up as a daemon.