[FOSS-GPS] how to make a rover with limited satellite view find a reliable fix

Tshepang Lekhonkhobe tshepang at gmail.com
Wed Jul 4 14:21:44 PDT 2012


On Thu, Jun 28, 2012 at 7:32 PM, Tshepang Lekhonkhobe
<tshepang at gmail.com> wrote:
> Suppose I have this configuration:
>
>     pos1-posmode  =kinematic
>     pos2-armode   =continuous
>     ant2-postype  =rtcm
>     inpstr1-type  =tcpcli
>     inpstr2-type  =ntripcli
>     inpstr1-path  =<tcpsvr url>
>     inpstr2-path  =<userid>:<password>@<ntrip server url>/<mount point>
>     inpstr1-format=ubx
>     inpstr2-format=rtcm3
>
> That is, input 1 is a rover that gets its data (ubx) via a tcp server (using
> str2str) and input 2 is ntrip server base station. This works pretty well if
> the rover has more LOS to GPS satellites. That's when it's hovering between
> 9 and 10 valid satellites. But when not the view is not so good (6-9 valid),
> it hardlly ever gets fixes that last.
>
> Is there a way to make the antenna with poorer LOS have more and reliable
> fixes?

Anyone out there? Can this be done?


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