[time-nuts] GPS PRN vs SV...??

[Bruce Griffiths]

Michael Baker wrote:
> Hello, All--
>
>   "Tom Van Baak" <tvb at LeapSecond.com>
> asked:
>   
>> Which time-nut will be the first to see PRN 32 on Feb 19?
>> I wonder what old GPS receivers won't be able to see it?
>>     
> ---------------------
>
> So-- Is "PRN" the same as "SV" as given for each
> GPS bird being tracked by my Trimble T-Bolt?
>
> Thanks!!
>
> Mike Baker
> Micanopy, FL
>   
Correction:

On checking the Thunderbolt documentation there are no messages
containing any SV identifier other than its PRN#.
Thus it would appear likely that SV in the thunderbolt monitor program
is actually the SVs PRN no.
It would have been better if Trible actually labelled the SV identifier
correctly.
Their documentation is inconsistent on the meaning of this particular field.
Motorola's is far clearer and consistent.

Furuno and Motorola use PRN # to identify the SV and label it as such.

It would appear that the only way to obtain the SVN is to actually look
it up in the table provided by USNO.

Bruce