Re: GPS and Great Circle
Subject: Re: GPS and Great Circle
From: John Kabel (jjkabel@XXX.XXX)
Date: Tue Oct 08 2002 - 15:35:55 EDT
I have just done a quick experiment with my Lowrance Globalmap 100.
Picking a waypoint due west of here sends me on a great circle route
starting in a direction always north of west, the exact azimuth
depending on how far around the globe I put the waypoint up to 180
degrees away. It is what I have always taught my GPS students: the
receivers always send you on a Great Circle route. I don't know of any
models which allow for rhumb line navigation.
John Kabel
London, Ontario, Canada
> I am a lurker in this group and actually know only a smidge celestial
> navigation. I hope my question is not out of place here. I am curious
> whether my GPS follows the great circle route or Mercator rumb line when
> plotting long distance courses?
> Thanks for patience with the dummy,
> Joe...
