[time-nuts] Spacecraft Timekeeping
Javier Herrero
jherrero at hvsistemas.es
Wed Mar 9 19:39:11 UTC 2011
Hello,
El 09/03/2011 19:58, Kevin Watson escribió:
>
> As I said in an earlier message, this is an experiment that I want to
> run and would rather not touch mission and safety-critical GNC
> components, like our navigation GPS receivers. Mass is not an issue.
>
So I understand that timing is not distributed (or at least not
available to you) in the spacecraft, that's a pity... I've seen in some
spacecrafts that time is distributed using a PPS signal and a
broadcasted message through MIL-1553 bus - would be a lot easier if you
could hang to it (in the cases I know, it was a MIL bus only for the
science payload TCs & HKs - independent from the GNC MIL bus). At least
you're lucky since mass is not an issue (I've met people that would have
killed for and aditional kg)
Regards,
Javier
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