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    USNO celestial navigation algorithms
    From: Paul Hirose
    Date: 2003 Jun 2, 10:49 -0700

    Seen on the U.S. Naval Observatory Web site:
    
    "As part of a Navy software project, new algorithms for celestial
    navigation have been developed. These algorithms are based on a
    solution to a familiar astronomical problem - determining the orbit of
    a body from a series of observations. In this case, the body in
    question is a ship and its orbit is a rhumb-line track over the
    spheroidal surface of the Earth. Given suitably accurate observing
    systems, these algorithms would provide sight reduction and positional
    fixes at the one arcsecond (30 meter) level of precision."
    
    The algorithms were published in four papers by G.H. Kaplan, published
    1995 - 1996. Two are available online. Reprints of all may be ordered
    from the USNO.
    
    http://aa.usno.navy.mil/research/celnav.html
    
    Several months ago I mentioned a whiz-bang celestial nav program
    called STELLA, which unfortunately is in the military-only area of the
    USNO site. I wonder if STELLA is based on the algorithms in these
    papers.
    
    
    

       
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