[time-nuts] Carrier phase tracking

bg at lysator.liu.se bg at lysator.liu.se
Tue Feb 20 05:22:11 UTC 2007


More satellites IS better in downtowns all over the globe, and in forrests
etc. Modern high sensitivity receivers have the equivalent of many 10
thousands of "classic" correlators... Good for finding faint signals,
using long correlations times, and tracking many reflections of the same
signal.

--

   Björn


On Mon, February 19, 2007 18:40, Javier said:
> Hi
>
> But... as marketing people thinks that 'more satellites, better' some
> manufactures are commercializing small GPS receivers with 16 and even 20
> channels... and obviously, no advantage over 12-channel ones. Perhaps
> they expect the Navstar constellation to be so crowded in the near
> future to don't let the Sun rays reach the Earth :-)
>
> Regards,
>
> Javier
>
> Didier Juges wrote:
>
>>Then parallel receivers appeared, where the
>>signal processor was powerful enough to decode 4, then 6, then 8 then
>>all 12 signals at the same time (in parallel). You may remember when
>>parallel receivers became popular, all advertisements would prominently
>>display that feature. Now, you take it for granted. There are at most 12
>>visible satellites at the same time, so there is no need for more than
>>12 channels (at least for a "single frequency" L1 receiver)
>>
>>
>
>
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