[OSM-newbies] Triangulation using GPS w/ magnetic compass

[Jeffrey Martin]

I tried to do it. You really need professional surveying equipment to do this,
otherwise the error just gets to big to be useful.

On the plus side you wouldn't need top of the line equipment, just
the cheap stuff I used in my high school drafting class.

Here's the wiki page:
http://en.wikipedia.org/wiki/Theodolite

On Wed, Mar 11, 2009 at 8:55 AM, Kelly Jones
<kelly.terry.jones at gmail.com> wrote:
> If you have a GPS device w/ an accurate magnetic compass, you could
> record the directions/angles to several far-away points from one
> location, then move to another position, and record the new
> directions/angles.
>
> For each point, you know two angles and the length of the side between
> them (ie, the distance between your two positions), and can use
> triangulation to determine their points' latitude/longitude.
>
> This would be a great way to map hard-to-reach locations.
>
> People with panaromic city views could map dozens of streets in just a
> few minutes.
>
> Has anyone tried this approach?
>
> --
> We're just a Bunch Of Regular Guys, a collective group that's trying
> to understand and assimilate technology. We feel that resistance to
> new ideas and technology is unwise and ultimately futile.
>
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>



-- 
Jeffrey John Martin
dogshed at gmail.com