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    Re: Accuracy of sextant observations at sea
    From: Richard B. Langley
    Date: 2010 Nov 21, 17:43 -0400

    Some possibly useful additional references (albeit with regard to GPS
    but the statistical theory is still relevant):
    
    GPS Accuracy: Lies, Damn Lies, and Statistics (GPS World, November 1998)
    
    
    GNSS Accuracy: Lies, Damn Lies, and Statistics (GPS World, January
    2007; sequel to previous article)
    
    
    
    The Mathematics of GPS (GPS World, July/August 1991)
    
    
    -- Richard Langley
    
    Quoting Gary LaPook :
    
    > I am attaching Figure Q6d from Bowditch (1977) which graphically
    > shows the relationship between sigma and percentage of fixes in a
    > circular distribution, the same as in the Extended Table Q7d that I
    > posted previously.
    >
    > gl
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    File:

      
    > =============================================================================== Richard B. Langley E-mail: lang---.ca Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ Dept. of Geodesy and Geomatics Engineering Phone: +1 506 453-5142 University of New Brunswick Fax: +1 506 453-4943 Fredericton, N.B., Canada E3B 5A3 Fredericton? Where's that? See: http://www.city.fredericton.nb.ca/ ===============================================================================

       
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