NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Quad regression for Lunar Distances?
From: Tony Oz
Date: 2018 Nov 21, 07:04 -0800
From: Tony Oz
Date: 2018 Nov 21, 07:04 -0800
Dear Frank,
You suggested this article:
https://davidburchnavigation.blogspot.com/2018/11/fit-slope-method-to-analyze-sextant.html
English is not my native (and I'm not so prominent in Mathematics either!) so it is difficult to me to discuss these matters.
Intuitively I was thinking (when creating this topic) along the same line - there is a lot of a priori knowledge about the altitudes and their trends which we must use as restrictions of the curve-fitting process. The article puts it very clearly.
Just one comment though: we are expected to have rather good DR to use it for the slope selection. If our DR is not so good - could we do more harm than good by introducing a wrong slope?
Please comment.
Regards,
Tony
60°N 30°E
