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Standard GPS vs Advanced/Pro GPS

Discussion in 'Standard/4k Discussion' started by SpaceDan, Jun 12, 2016.

  1. SpaceDan

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    I have an Advanced, got a crack in the shell, so while it is being repaired I decided to buy a Standard (4K).

    I've noticed I'm going getting about 5 satellites connecting with the Standard, compared to 10-15 with the Advanced. And I quite often get a message saying "Atti Mode" because it loses GPS signal entirely momentarily.

    So from what I'm reading, the Standard/4K does not have GLONASS satellites, so does that mean that you'll always have fewer satellites connected than the Adv/Pro, and you're more likely to get a message that you're in Atti mode?

    Thanks
     
  2. Meta4

    Meta4 Moderator
    Staff Member

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    US GPS and Glonass are two separate satellite systems.
    The Phantom Adv and Pro can tune in to both and that gives them more sats.
    But the Phantom won't work with 3 GPS + 3 Glonass.
    The deck is bigger but the Phantom still has to have a full hand of either stye to have a good position.
    But there are lots of satellites up there so this isn't a problem.
    Here's a display of available sats at one location.
    The squares are Glonass and the circles are GPS.
    [​IMG]
     
  3. OrlyP

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    Yup.. as you've described it, that's exactly what's happening. The Standard can only receive GPS but none of the GLONASS. It makes the Standard slightly less accurate and takes a bit longer to acquire its position. In other words, it can only receive roughly half of the satellites of what the Advanced/Pro is capable of.
     
  4. firestars

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    Glonass is not worth worrying about. It adds minimal accuracy.


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