NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Mathematical Advancement of a celestial COP
From: Bill Murdoch
Date: 1998 Oct 25, 3:33 PM
From: Bill Murdoch
Date: 1998 Oct 25, 3:33 PM
I would take a look at four different references. M.F. A'Hearn and G.S. Rossano, "Two Body Fixes by Calculator", Navigation: Journal of the Institute of Navigation, Vol 24, No. 1, Spring 1977, p 59-66. This is a good easy conversion from two sights to a lat/long fix. J.A. Van Allen, "An Analytical Solution fo rthe Two Star Sight Problem of Celestial Navigation", Navigation: Journal of the Institute of Navigation, vol 28, No 1 Spring 1981, p 40-43. Much like the paper above, but a little different. B.D. Yallop and C.Y. Hohenkerk, "Compact Data for Navigation and Astronomy for the years 1991-1995" (and I think there is a newer edition), Cambridge University Press, p x-xxiv. This is the real explaination for the almost un- understandable instrucitions in the Nautical Almanac. It handles three or more sights, calculates the lat/long fix inside the cocked hat by a least squares method, and estimates the errors in the fix. It is the method I used in my TI-82 program. George H. Kaplin, "Determining the Position and Motion of a Vessel from Celestial Observations", Navigation:Journal of the Insititute of Navigation, Vol 42, No 4, Winter 1995, p 631-648. This is the state of the art. Blow away. Knowing everything you know; knowing where you are and where you are going. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-= =-= TO UNSUBSCRIBE, send this message to majordomo@roninhouse.com: =-= =-= navigation =-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=
