NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Tilt angle sensing for use as a sextant
From: Jim Hickey
Date: 2023 Mar 6, 09:33 -0800
From: Jim Hickey
Date: 2023 Mar 6, 09:33 -0800
I realize that in general, the tilt sensing capability of smart phones to measure an altitude is nothing close to actual sextant accuracy but I do see some claims that there are chips on the market that can deliver acuracy < 1 degree. In the attached article, 0.005 is mentioned provided appropriate calibration is performed and souces of error accounted for. Getting to +/- 0.3' accuracy would be pretty decent celestial nav accuracy.
Optimizing high precision tilt/angle sensing: Accelerometer fundamentals - Embedded.com
Any thoughts on how practical it would be to incorporate one of these chips into an electronic sextant and achieve the accuracy?
Cheers,
Jim
