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Paul Hirose wrote:
>
> 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.

Yes it is.

--- Gordon

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| Gordon Talge WB6YKK               e-mail: gtalge@pe.net    |
| Department of Mathematics       http://www.lbusd.k12.ca.us |
| Wilson High School                  Long Beach, CA         |
| (o-    Debian / GNU / Linux                                |
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