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what is GPS for

Discussion in 'Phantom 2 Discussion' started by DeliriousGimbal, Nov 22, 2014.

  1. DeliriousGimbal

    Aug 24, 2014
    Likes Received:
    2 questions really:
    What functions involve the GPS in the Phantom 2?

    Initial lift-off location fixing (for use in the GoHome function)

    current location fixing (to inform the GoHome algorithm... but apparently *not* used to keep the model in dynamic station keeping???... I was curious on this because I had expected the model to have a shot at holding-station during a flight. the model will drift downwind without apparently making autopilot efforts to counter this drift. both switches on my handcontroller are in fully UP position - is this normal?)

    what else is the GPS used for?
  2. IrishSights

    Jan 14, 2014
    Likes Received:
    Bangor, Northern Ireland, UK
    Something is wrong. If enough satellites are locked in during flight and it is GPS mode it will hold its position within a metre or 2. If it is drifting in the wind then its in ATTI mode.
  3. BobUnplugged

    Nov 17, 2013
    Likes Received:
    Yes, when in GPS mode, the Phantom tries to maintain its current GPS location when there's no stick input. With the Phantom hovering a foot over your head, grab a landing leg and walk thirty feet away. When you let go, the Phantom will fly back to the place where you first grabbed her leg.

    I find that even when I have a GPS fix before takeoff, that the "fix" capability improves over the first minute of the flight.