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Nav strange behaviour

Discussion in 'Australia & New Zealand' started by raynewman, Oct 10, 2015.

  1. raynewman

    raynewman Member

    Joined:
    Oct 11, 2014
    Messages:
    752
    Location:
    Brisbane, Australia
    While driving along a straight 2 km stretch of suburban road in Brisbane today, the little red arrow car icon just went in circles in one place - most strange.

    [video]https://plus.google.com/u/0/107631671374825180371/posts/Q1kzZ5sSA5x?pid=6203916089714563154&oid=107631671374825180371[/video]
     
  2. fwgmills

    fwgmills Member

    Joined:
    Jun 30, 2015
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    101
    Location:
    Roanoke, TX
    I don't know how tall the buildings on that street are, but all GPS has trouble on streets with tall buildings because the car can only see satellites directly above you and may not be able to lock 3 satellites (required for an accurate fix). I get this effect sometimes driving the streets in downtown Dallas, TX because of building height blocking satellites.
     
  3. raynewman

    raynewman Member

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    752
    Location:
    Brisbane, Australia
    That shouldn't be a problem. The street is quite open in places and I travel it regularly without a problem.
     
  4. Trav

    Trav Member

    Joined:
    Apr 14, 2015
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    112
    Location:
    Perth Western Australia
    My nav did the same thing at about 3pm WST.

    maybe it was a problem with the satellite...
     
  5. raynewman

    raynewman Member

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    Oct 11, 2014
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    Location:
    Brisbane, Australia
    Mine was at 2:35 PM EST or 12:35 PM WST - so probably not.
     
  6. Dborn

    Dborn Confirmed

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    Aug 26, 2011
    Messages:
    2,075
    Location:
    Sydney, Australia
    Dancing for joy?
     
  7. Wattup

    Wattup Member

    Joined:
    Apr 30, 2015
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    88
    Location:
    Sunshine Coast Australia

    Or practising for a bit of circle work in the paddock for a B&S ball out west. After all Ray already has the tux ready to go. Was the last car a V8 ute?
     
  8. mymobile

    mymobile New Member

    Joined:
    Aug 2, 2015
    Messages:
    2
    Location:
    Brisbane Australia
    Is it because it's trying to get you to go back for "Sammy's Girl" which is different to the seafood shop named the same?
     
  9. mymobile

    mymobile New Member

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    Aug 2, 2015
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    Location:
    Brisbane Australia
    It was "Fortitude" Valley.
     
  10. Ramjet73

    Ramjet73 Member

    Joined:
    Sep 3, 2015
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    30
    Location:
    Brisbane, QLD, Australia
    I've seen similar behaviour from phone GPSs, I think it's usually related to bad location data. While your GPS was in the Valley, as it was not Friday/Saturday night it is unlikely it was drunk :)
     
  11. WhiteStar

    WhiteStar Member

    Joined:
    Sep 28, 2014
    Messages:
    356
    Location:
    Sydney, AU
    Unless Ray really did do doughnuts at a B&S Ball in the Valley, I think our friend from Dallas has provided the most likely accurate answer. Typically a minimum of three satellite fixes are required for triangulating a roughly accurate location although much greater accuracy is achieved with more satellite fixes. As stated, buildings, trees even clouds can obscure a fix so most likely that the dancing icon occurs when there’s less than 3 satellite fixes at any given time.
     

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