[time-nuts] WWVB phase plots

Brooke Clarke brooke at pacific.net
Mon Mar 19 22:10:21 UTC 2012


Hi Henry:

There are millions of WWVB clocks in use and the new signal must be fully compatible with them.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html


ehydra wrote:
> What makes me wonder: Why don't they adapt the DCF77 implementation? Is it the not invented here syndrome?
>
> At it looks like they never heard of Kasami sequences.
>
>
> - Henry
>
>
> Dennis Ferguson schrieb:
>> On 18 Mar, 2012, at 10:52 , John Seamons wrote:
>>> They do talk about using the 11-bit Barker code for autocorrelation. But the sync bits transmitted only match the 
>>> Barker code if you interpret them a little bit out-of-order.
>>
>> The part of the paper that talked about the Barker code confused me
>> somewhat since I couldn't quite figure out how it was relevant.  The
>> autocorrelation property of the Barker code is only interesting if
>> the Barker code is the only thing being sent (over and over), but
>> in this case the concerns are more about spurious correlations with
>> the variable data, something for which no solution seems to be
>> possible.
>>
>
>



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