NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Systematic error and its resolution
From: Peter Fogg
Date: 2007 Apr 07, 07:07 -0000
From: Peter Fogg
Date: 2007 Apr 07, 07:07 -0000
Frank (also) wrote: > I think it's probably true (and probably obvious) > that you would get even better results with more sights Yes. A graphic method of plotting tends to become horribly complicated with five or more position lines, but a least squares fix, analysis for systematic error, etc can all be carried out. I tend to think of four position lines as being the ideal number, but the analysis of any number of LOPs is a cinch for modern supercharged methods (eg, use of computing devices). In practice my nav calculator does this very well, encouraging the use of multiple bodies - it has no trouble at all in deriving a fix based on them all, and rendering the error of each (distance of each body's LOP from fix) as a post fix check. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
