[time-nuts] WWVB BPSK Receiver Project?

Azelio Boriani azelio.boriani at screen.it
Wed Mar 14 22:17:55 UTC 2012


The first move will be to familiarize with this new modulation format. Of
course I can't receive the WWVB but the DCF77 maybe a good test for me.

On Wed, Mar 14, 2012 at 11:08 PM, Brooke Clarke <brooke at pacific.net> wrote:

> Hi:
>
> I sure would like a WWVB BPSK receiver for the new modulation.  The
> processing gains described in the paper John Seamons linked describes
> processing gains that are tens of dB above what's possible with the old AM
> data format.  John has also measures the experimental phase modulation
> testing, see:  http://www.jks.com/wwvb/wwvb.html
> The WWB paper "New Improved System for WWVB Broadcast" given at the 43rd
> PTTI November 2011 is at:  http://jks.com/wwvb.pdf
>
> Part of the processing gain comes directly from the BPSK modulation and
> that amounts to a little over 10 dB improvement, but there's a further 18
> dB gain to be had by accumulating an hours worth of data and processing
> that.
>
> I'm sure in time there will be plenty of low cost ICs designed to receive
> the new signal, but my guess is that many Time Nuts would like to be in on
> the ground floor.  Also NIST probably would like to get reports on the new
> signal when they do test transmissions.
>
> How to move forward?
>
> --
> Have Fun,
>
> Brooke Clarke, N6GCE
> http://www.PRC68.com
> http://www.end2partygovernment.com/Brooke4Congress.html
>
>
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