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An Idea for ArduPilot-based Differential GPS

Posted by Mark Harrison on May 11, 2011 at 12:35pm
Here's an idle thought I had that might make help ArduCopter 2.0 loitering precision:
  • Hook a GPS to GCS.
  • GCS calculates GPS difference.
  • GCS transmits GPS correction over xbee MAVLINK connection
  • ArduCopter Stabilize mode gets very fine resolution.

 

Details here: http://eastbay-rc.blogspot.com/2011/05/idea-ardupilot-differential-gps.html

 

DifferentialGPSPos.jpg

DGPS background: http://www.ngs.noaa.gov/CORS

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Comments

  • Russell B. Sutton May 11, 2011 at 3:44pm
    This is a very good concept, been thinking about it myself.  Also through in a Baro sensor with that GPS and CSG and get way better ALT. readings as well.
  • Agustin Monteverdi May 11, 2011 at 3:35pm

    why... for the luzz...

    i once read about it  seems a good idea complex buts its a good idea..

     

  • Mike May 11, 2011 at 3:21pm
    No they both need to output carrier wave data - I am testing some units that do this next week and maybe you will be able to do this for a reasonable price but why? It just adds so much more complication to what is already a complex system.....
  • hamish May 11, 2011 at 2:14pm

    sooo from what i gathered off poor man GPS , If you could get both recievers to lock onto the same satelites then you're game?

     

    Neglecting ionosphere interference and assuming identical recievers

  • Mike May 11, 2011 at 1:56pm

    Its not that easy - Google: Poor Man's DGPS to find out why....

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