Has anybody looked at the impact of the periodic phase reversals of BPSK
on the loop of phase-tracking receivers, like the Fluke or the HP 117A?

NIST does claim backward compatability for time. But what about time
interval?

I know you can extract the carries from BPSK with a Costas Loop (which
essentially squares the signal and uses the second harmonic) but the
existing, installed hardware does not do this.

If I'm right, that's another broken egg in the frequency reference basket.

Best,

-John

================


> Here is a copy of the paper NIST co-authored describing the new WWVB phase
> modulation format:
>       http://jks.com/wwvb.pdf  (2MB PDF)
>
> John Lowe from NIST said I could redistribute it to the list. It will be
> available on the NIST website sometime in April once the official PTTI
> 2011 proceedings are published. When that happens I'll remove my link
> above and you can find the paper here:
>       http://tf.boulder.nist.gov/general/publications.htm  (search for Bin
> Number "2591")
>
> Also of interest, a company contracted to help with the development will
> have silicon (and patents) at some point:
>       
> http://www.xtendwave.com/xtendwave-awarded-grant-for-atomic-clock-enhancements.html
>       http://www.xtendwave.com/atomictimekeeping.html
>
>
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