[FOSS-GPS] RTKLib rover - base question

[Daniel Kranich]

Quick question,

Have you updated to the latest patch version of RTKLib? The standard 
download is not the latest version. You must download and install from 
the download page, and then you have to download the patch from the 
support page here: http://www.rtklib.com/rtklib_support.htm
No.75 in the support page is the patch which will update all of the 
programs and it could solve your problem.

--
Daniel Kranich
Northern Utility Services
Daniel at NUSalaska.com
(907)242-9820

On 7/23/2012 4:42 AM, Aljaž Osterman wrote:
> Dear all,
>
> I've just joined the mailing list. I'm not sure if this list accepts
> messages only from subscribers so perhaps you'll get it twice (the
> content is very similar).
> Instead of just introducing myself there's also 'a not so short'
> presentation of a problem I have with RTKLib.
>
> I've started working on an agricultural project involving precise GPS
> positioning. My previous use of GPS devices was limited to simple flight
> recording and car navigation.
>
> For our project we're using 2 ublox6 devices and RTKLib running on
> Windows. One receiver acts as a rover and another as a base. Each is
> connected to PC. Between PCs there's wireless connection.
> The problem I have is that from base data no location is calculated.
>
> What works:
> 1- both receivers work independently (each on its own PC) with ucenter
> (software from ublox)
> 2- both receivers work independently with RTKnavi if input stream is set
> to rover
> 3- rover works over wireless (navi+strsvr)
>
> To check where's the real problem I went on with only 1 receiver and 1
> PC. In Navi I tried once to set input stream as rover (position
> calculated ok, plotted) and next to set as base station. This time,
> position is not calculated. In Navi, 2nd square is light green (as
> before 1st with rover), but the middle one (the only one) never switches
> from dark green to light green. However, satellites are found and
> strength of signals is plotted (and changes with time so it works
> somehow) BUT they are all grey and never turn to color mode.
>
> I've found almost identical (and recent) thread but there was no
> solution or at least not described:
> http://lists.osgeo.org/pipermail/foss-gps/2012-May/000688.html
>
> >From the RTKLib manual I don't know if this behavior of RTKLib is by
> design or base/rover input streams can be both used in case of position
> calculation from a single receiver signal.
> Anyway, I still need to obtain the position from the base ...
>
> As proposed in other posts I've already set in u-center
> View-Messages view: UBX-CFG-PRT to Target=USB, P_IN=UBX+NMEA+RTCM,
> P_OUT=RAW
> and
> Configuration View - MSG: RXM-RAW, RXM-SFRB -> USB 1
>
> Thank you for reading so  far. I'll record the outputs tomorrow so
> there's more to come :)
>
> I'd appreciate your comments and advices.
>
> Best regards,
> Aljaz
>
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