[time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

Bob Camp kb8tq at n1k.org
Fri Dec 5 17:40:22 EST 2014


> On Dec 5, 2014, at 5:25 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> henry at pericynthion.org said:
>> It's a global system and modern receivers are already capable of augmenting
>> GPS solutions with measurements from Galileo satellites.
> I've seen lots of comments about units that will use other than GPS 
> satellites, but I don't think I've seen any actual output from one of them.  
> Is that just a gap in my toy collection or has reality not caught up with the 
> marketing hype?  (Or perhaps I just haven't looked in the right place/time.)

They are out there

> Typical low cost GPS receivers send out NMEA which includes a list of 
> satellite alt/az and SNR based on the SVN (satellite virtual number, or 
> something like that).  How are the Galileo and other satellites going to show 
> up in that?  Is there an official plan for something like 1dd for Galileo, 
> 2dd for Glasnost, and …?

Typically they let you selectively enable each of the major systems. As you enable more systems, you get more sat’s in each of the messages. For most users, there is not a lot of reason to enable multiple systems. If you want UTC sync’d to USNO you enable one system. If you want to set your watch to time from Moscow, you enable another system …. Setting your watch to both is impractical. 


> -- 
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