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Navigating to Wapoints without GPS?

Posted by Elvis on December 26, 2012 at 9:23am

I have a unique situation where I want a rover to navigate to waypoints without the aid of a GPS. Would this be possible? Maybe through use of other sensors... accelerometer, sonar, etc...?

This is for an educational project where GPS nav is not allowed.

Thanks,

Elvis

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  • Admin
    Thomas J Coyle III January 7, 2013 at 1:11pm

    @Elvis,

    Everything that you have ever wanted to know about navigating to waypoints with GPS as a last resort: http://www.geology.smu.edu/dpa-www/robo/jbot/index.html

    Regards,

    TCIII

    jBot: The Journey Robot - David P. Anderson
  • e.Man January 4, 2013 at 3:56pm
    don't know if i used the correct term, but basically it's using software to recognize objects. it is not a trivial solution, but it may be worth looking into

    good luck
  • e.Man January 4, 2013 at 12:30pm
    if you're familiar with computer vision, that may be an avenue to explore if you have unique landmarks

    i'm also sure there are GPS-like systems available which are ground-based systems - so you have some transmitters and a Rx and you triangulate position

    another possibility may be the cellular networks - i think they use AGPS - assisted GPS - whereby you calc position based on nearby towers

    what about line following? can you lay a string for the rover to follow?
  • 3D Robotics
    Chris Anderson December 26, 2012 at 9:28am

    If you're on flat pavement and add wheel encoders, you can use dead reckoning for short periods of time before it diverges too much from reality without GPS. 

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