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Thread: Waas?

  1. #1
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    Waas?

    Ive been reading about WAAS. I know Street Atlas supports this but is it worth it? Does Co-Pilot Live support it?
    2003 Subaru Impreza TS
    Staus: Done.. too lazy to make pictures lol.

  2. #2
    Maximum Bitrate wi77iam's Avatar
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    WAAS is Wide Area Augmentation System. It is a function of the gps receiver, not the software. Basically, a WAAS-enabled gps will receive correction signals from the WAAS satellite and apply these to its fix solution. The software doesn't know or care about WAAS and will display any fix info the receiver gives it.

    Not all gps receivers are WAAS-enabled. The Earthmate is.
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  3. #3
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    Is it worth it? If so whats a good WAAS enabled reciever?
    2003 Subaru Impreza TS
    Staus: Done.. too lazy to make pictures lol.

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    A WAAS enabled receiver provides accuracy as good as <3 meters, whereas a non-WAAS receiver will typically have accuracy to around 10 meters.

    Here's some brief info: http://www.garmin.com/aboutGPS/waas.html

    Currently 2 of the 24 satellites that make up the GPS system send out WAAS correction information, although I read somewhere recently that there will be another in 2006. In order to receive the WAAS data, your GPS must be tracking at least one of the 2 WAAS satellites.

  5. #5
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    Can somebody reccomend a good reciever?

    I found this one but Im not sure if its a good one or not
    http://www.gpscity.com/gps/brados/11.../gm210usb.html
    2003 Subaru Impreza TS
    Staus: Done.. too lazy to make pictures lol.

  6. #6
    Maximum Bitrate eCarô's Avatar
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    Quote Originally Posted by dhendrix11
    A WAAS enabled receiver provides accuracy as good as <3 meters, whereas a non-WAAS receiver will typically have accuracy to around 10 meters.

    Here's some brief info: http://www.garmin.com/aboutGPS/waas.html

    Currently 2 of the 24 satellites that make up the GPS system send out WAAS correction information, although I read somewhere recently that there will be another in 2006. In order to receive the WAAS data, your GPS must be tracking at least one of the 2 WAAS satellites.
    I wonder where those are at?

    I'm in SE Michigan.

    I have never noticed any difference when I enable/disable WAAS on my Garmin eTrex Vista. With a clear sky, the Garmin usually is reporting an accuracy of 20-25 feet. On occasion I'll see 18 feet maybe. Once I saw 15 feet.

    I have used my GPS in most areas in Michigan, a little in north Ontario Canada, a drive from Michigan to South Carolina, and for about 2 months (everyday) in south Brazil. Brazil didn't get quite as good of accuracy as the US.

  7. #7
    Maximum Bitrate wi77iam's Avatar
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    Quote Originally Posted by eCarô
    I wonder where those are at?

    I'm in SE Michigan.

    I have never noticed any difference when I enable/disable WAAS on my Garmin eTrex Vista. With a clear sky, the Garmin usually is reporting an accuracy of 20-25 feet. On occasion I'll see 18 feet maybe. Once I saw 15 feet.

    I have used my GPS in most areas in Michigan, a little in north Ontario Canada, a drive from Michigan to South Carolina, and for about 2 months (everyday) in south Brazil. Brazil didn't get quite as good of accuracy as the US.
    The WAAS ground stations which supply the corrections are only located in N. America. The WAAS satellites are geostationary (over the equator). My Magellan Sportrak indicates when it is tracking the WAAS satellite and the position is corrected. I've seen accuracy of 3 meters with a clear view of the horizon.
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  8. #8
    Maximum Bitrate eCarô's Avatar
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    Quote Originally Posted by wi77iam
    The WAAS ground stations which supply the corrections are only located in N. America. The WAAS satellites are geostationary (over the equator). My Magellan Sportrak indicates when it is tracking the WAAS satellite and the position is corrected. I've seen accuracy of 3 meters with a clear view of the horizon.
    OK, so a clear view of the horizon (towards south) is best for WAAS?

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    Low Bitrate GScherler's Avatar
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    Thumbs up

    I bought a BU-303, like this one ( http://tinyurl.com/2ef6p ) and it works great as long as your software supports any of these formats: NMEA 0183 command: GGA, GSA, GSV, RMC, GLL, VTG.
    It locks on very fast and I get 8 to 12 sats all the time(Well, as long as they are in sight). I have it on the roof of my SUV as it has a magnet that attaches to the SUV's surface. No problem with snow or rain either. It uses your USB to connect to your puter.
    I paid US $67.
    Good luck,
    Gary


    Quote Originally Posted by Maeveth
    Can somebody reccomend a good reciever?

    I found this one but Im not sure if its a good one or not
    http://www.gpscity.com/gps/brados/11.../gm210usb.html

  10. #10
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    Quote Originally Posted by eCarô
    I wonder where those are at?

    I'm in SE Michigan.

    I have never noticed any difference when I enable/disable WAAS on my Garmin eTrex Vista. With a clear sky, the Garmin usually is reporting an accuracy of 20-25 feet. On occasion I'll see 18 feet maybe. Once I saw 15 feet.

    I have used my GPS in most areas in Michigan, a little in north Ontario Canada, a drive from Michigan to South Carolina, and for about 2 months (everyday) in south Brazil. Brazil didn't get quite as good of accuracy as the US.
    I could be wrong, but if memory serves, the two WAAS satellites are positioned directly over the equator, so they aren't as easy to track as satellites overhead.

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