[Starlink] Starlink Reverse Engineering
David Lang
david at lang.hm
Sat Sep 9 00:15:08 EDT 2023
On Sat, 9 Sep 2023, Larry Press via Starlink wrote:
> Why does Elon Musk object to the use of Starlink for navigation?
He hasn't said, but I suspect a couple reasons
limitations on what SpaceX can do, orbital changes, protocol changes, etc
could all affect people depending on something that Starlink wasn't intending to
offer in the first place
liability, what happens when the navigation gives the wrong location because
of a change Starlink made.
to use the satellite signals, you not only need the timing, you need rather
precise orbital information. If the satellites are modifying their orbits
autonomously, how does that information get to everyone?
For normal Starlink purposes, the satellites determine which sat is covering
what area on the ground and the ground stations can react to the different sats
that they hear (beaming back on reciprical bearings or the beam info can be in
the handshake)
but navigation requires getting the signals from many sats at once to work out
the timing between them
note, I have no inside info, this is just my version of logical guessing.
David Lang
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