[Top] [All Lists]

[TowerTalk] Compass and GPS

To: <>
Subject: [TowerTalk] Compass and GPS
From: "Doug Ronald" <>
Date: Wed, 4 Jan 2012 16:05:36 -0800
List-post: <">>
>I guess I'm not sure why some have additional sensors if it's possible to
be as accurate, with no movement, from GPS.


A GPS receiver with only one antenna cannot determine the direction it is
pointed. Sure, with some movement X, Y, Z changes and a differential
estimate is made. So for near-zero velocities, a flux-gate compass is used
in the Garmins for true heading determination.





TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>