NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: estimating speed and course along with position
From: Jeremy C
Date: 2008 Jun 6, 15:42 EDT
From: Jeremy C
Date: 2008 Jun 6, 15:42 EDT
I will try, but when we go out on these short exercises, we
often vary both speed and direction at fairly frequent intervals. I
am going out next week, but with a new captain. I will see what we are
doing in the mornings (the time I will see both sun and moon out here) and
see what I can do.
Jeremy
In a message dated 6/7/2008 12:08:20 A.M. West Pacific Standard Time,
menga@polito.it writes:
Jeremy:
during navigation with approximately constant course and speed, a sequence
(at least four) of Sun/Moon fixes spanning a few hours (> 0.5 Hr, 2Hr?), and
with a sufficient azimuth spread, allow to estimate both speed and course,
along with position.
Are you willing to shoot, once, these measures for me?
I'm actually want to check how accurately Least Squares perform in this
joint estimation.
Giuseppe
--~--~---------~--~----~------------~-------~--~----~
Navigation List archive: www.fer3.com/arc
To post, email NavList@fer3.com
To , email NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---
Get a NavList ID Code
A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.