[GRLUG] OT, but GPS, anyone?

[Michael Mol]

On Wed, Aug 26, 2009 at 12:37 PM, L. V. Lammert<lvl at omnitec.net> wrote:
> At 12:01 PM 8/26/2009 -0400, you wrote:
>>On Wed, Aug 26, 2009 at 11:53 AM, L. V. Lammert<lvl at omnitec.net> wrote:
>> > Got a project where we need to establish a true N indiation on a
>> > stationary piece of equipment using a Linux host, .. if we had two GPS
>> > units, say, 25' apart it would be trivial (take the differential between
>> > the two readings and any positional errors cancel, producing a reference
>> > vector that can then be corrected to true N).
>> >
>> > Need to determine the *minimum* spacing between two units - don't
>> > suppose anyone knows anything about this sort of technology, or could
>> > point us in the right direction?
>>
>>Minimum spacing between two whats? Stationary pieces of equipment, or
>>the GPS units?
>
> GPS units.

It depends on the model of the GPS (some have correctional components
in them) and how good a fix your devices get.  Your fix quality will,
in turn, depend on environmental conditions.  You'll have to
experiment to see how close you can get while maintaining the accuracy
you're looking for.

-- 
:wq