NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Andrés Ruiz
Date: 2023 Mar 13, 09:49 +0100
Comparison table between the two examples:
|
|
Orion fix |
3 sights - Equilateral triangle |
|
EoC
|
Prob = 0.9500 k = 2.4477 theta = 6.5112 a = 0.0067 b = 0.0630 |
Prob = 0.9500 k = 2.4477 theta = -0.0120 a = 0.0058 b = 0.0063 |
|
DOP |
5.50 Moderate |
1.16 Excellent |
|
Z factor |
0.99 |
0.04 |
Re: Submarine celestial through periscope
From: David Pike
Date: 2023 Mar 11, 03:40 -0800
... GNSS is range spheres and receiver clock correction, whereas intercept method celestial is intercepts and azimuths.
The Circle of Equal Altitude is the intersection of a cone with the apex on the star and the Earth ( sphere or ellipsoid)
References:
Dilution of precision (navigation) - Wikipedia
Celestial Fix - n LoPs - by Least squares Sight Reduction algorithm. Paper & Excel https://sites.google.com/site/navigationalalgorithms/Home/papersnavigation
