[time-nuts] Speaking of Costas loops
Jim Lux
jimlux at earthlink.net
Fri Jul 5 16:18:39 UTC 2013
On 7/5/13 8:44 AM, Bob Stewart wrote:
> Wouldn't a Cs or Rb clock in orbit be slow due to relativistic effects? I'm pretty sure there is a relativistic correction to the GPS clocks.
>
> Bob - AE6RV
>
>
I believe that the original WAAS repurposed transponders intended for
other L-band satellite signals (e.g. Sirius/XM/LightSquared).
As noted earlier in the discussion, the new satellites might have a
specialized payload, which could have a purpose specific coherent
transponder, rather than a linear translator.
If it is purpose specific and single channel, then making it immune to
the local oscillator is straightforward.
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