NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
No Two-Body Fix Problems
From: John Karl
Date: 2009 Nov 5, 09:35 -0800
From: John Karl
Date: 2009 Nov 5, 09:35 -0800
I'm starting a new thread (I think it's called) because the "Two Body Fix Caveat" seems to have gotten off topic. As I posted on the other thread, It seems to me that if the computer code simply calculates the answers for the two possibles fixes, using A +B and A-B in Eq. 7.5d, and then lets the navigator pick the closest fix, all possible combinations of the locations of the GPs and ship are covered. And I don't see any problem with the ship being on, or near, GP1's meridian. This is a well defined problem with no ambiguity in the equations, and the navigator doesn't need to know his position relative to the meridian. Computing both fixes makes the program's inputs and outputs very logical and straightforward. After all, there are two fixes in the solution and the navigator must, indeed, select the proper one. Those interested might want to check this out to see if I'm right, John --~--~---------~--~----~------------~-------~--~----~ NavList message boards: www.fer3.com/arc Or post by email to: NavList@fer3.com To , email NavList+@fer3.com -~----------~----~----~----~------~----~------~--~---