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    Re: GPS Accuracy Now.
    From: Craig Scott
    Date: 2000 May 03, 9:58 AM

    DGPS is not obsolete because it still provides greater accuracy than the CA
    (civilian) mode of GPS.  The resolution of centimetre and millimetre
    positioning, such as used in surveying, uses carrier phase difference, and
    is still very expensive and more difficult to use.
    
    Check out the following web site for the definitive answer:
    http://www.colorado.edu/geography/gcraft/notes/gps/gps_f.html .
    
    I think the US turned off SA in an attempt to prevent the Russian GPS,
    GLONASS, from gaining a strong foothold.
    
    Craig
    -----Original Message-----
    From  Navigation Mailing List [mailto:NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM]On
    Behalf Of Ed Kitchin
    Sent: Tuesday, May 02, 2000 16:34
    To: NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM
    Subject: GPS Accuracy Now.
    
    With the reality that the government has now taken off "selective
    availability", does this mean that the DGPS is now an obsolete piece of
    equipment? What kind of accuracy can one expect to be the norm now? 1 - 5
    meters? Does anyone know?
    
    Ed
    

       
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