1. Unique Advantages of ‘ISS Orbitology’
ISS orbital properties:
LEO at 400 km
Synchronous rotation
Orbital period 90 min
Inclination i = 51°
Nodal regression 6° per day
LIST benefits:
Microgravity  Important sub-Hz vibrations < 10-6 of ground level
No active rotation  systematic rotation effects eliminated
All angles surveyed in >1000 beat variation cycles per month  orientation-independent noise more effectively integrated out.  c/c anisotropy search w.r.t. any rest frame: e.g. CMB, Dark Matter …
LEO at 30 km/s > max Earth spin at 460 m/s  improved boost test of c/c.
Illustrative simulation:
In ISS Analysis frame (X,Y,Z), the optimal orientation (0, sin i, cos i) of one cavity (magenta, with the other cyan) ensures full angles of space can be surveyed for c/c anisotropy over half nodal regression cycle.