NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Direct methods
From: Ronald van Riet
Date: 2007 Nov 04, 01:13 -0700
From: Ronald van Riet
Date: 2007 Nov 04, 01:13 -0700
On Nov 3, 10:28 pm, "George Huxtable"wrote: .... > Equations 7.5a to 7.5d take you to the latitude > of the crossing; indeed, the two latitudes, that you have to choose between, > for the two crossings. No analysis will choose for you which of those two > you are at For starters, if you don't have a rough idea where you are, you are a very poor navigator, so taking your dead reckoning position wil be sufficient for eliminating ambiguity. If you want a formal way of doing so, shoot a third star. IMHO there is no mathematical way to take away the ambiguity with just the two star observations, just as it is impossible to define a plane by just two points. Ronald --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---