[FOSS-GPS] RTKLIB Vehicle Accuracy

[beale]

As far as I know, the lowest price for a receiver that gives you the raw output needed for RTK is the NavSpark RAW at $80 (just the bare board, need to have an antenna also, and probably an enclosure of some sort).  
http://navspark.mybigcommerce.com/ns-raw-carrier-phase-raw-measurement-output-gps-receiver/

I think single-frequency 20 cm RTK may be possible in ideal conditions, if you move slowly enough. That is you have full sky view with no obstacles to block or reflect signals. For a ground vehicle that means open country or open field: no trees, buildings, etc.  In typical real-life situations you would normally use a dual-frequency GPS for that level of resolution (but that is not available on your budget).  NOTE: I have not tried RTK myself, only static solutions, so I may be wrong about what is achievable.

-John Beale
www.bealecorner.com

>  -------Original Message-------
>  From: Nick <darknovanick at gmail.com>
>  To: foss-gps at lists.osgeo.org
>  Subject: [FOSS-GPS] RTKLIB Vehicle Accuracy
>  Sent: 01 Jul '14 10:24
>  
>  Hello,
>  
>  
>  I am interested in getting an RTK GPS setup working for a moving vehicle,
>  not fast, perhaps 10 mph. I would postprocess the data collected later,
>  using data downloaded from a nearby station.
>  
>  
>  My desire is to log elevation data every few seconds as the vehicle drives.
>  I hope to achieve 10-20 cm accuracy for the position and the elevation.
>  
>  
>  As I research RTKLIB, it seems like most information I come across is
>  regarding a static location. Is my goal feasible to achieve this kind of
>  accuracy as the vehicle moves?
>  
>  
>  If so, can anyone recommend a good board to get me started? I'm hoping
>  to be able to do this for under $200 (just one receiver since the base
>  station is public) -- please give me a reality check if this is unlikely.
>  Thanks,
>  Nick