On 14 Feb 2008, at 21:45, Gerry Creager wrote:
As a rule of thumb, one gets an improvement of ~one order of
magnitude with augmentation. Not quite so good with WAAS as with
truly local DGPS, and nowhere nearly as good as RTK. We were able
to get, in the old days, with SA on, <10m accurac
As a rule of thumb, one gets an improvement of ~one order of magnitude
with augmentation. Not quite so good with WAAS as with truly local
DGPS, and nowhere nearly as good as RTK. We were able to get, in the
old days, with SA on, <10m accuracy with DGPS, and 15cm accuracies with
RTK, assuming
A tidbit...
In decimal degrees, N43.0 W88.0 to N43.1 W88.0 is equal to
about 1.1 meters.
If they are looking for sub-meter accuracy, they will need at least six
decimals out, unless they are saying that their accuracy is to five decimals
+/- 0.05. That's specsmanship in my
Evening,
What would the GPS be used for? APRS Tracking? Farming?
Farming actually.
The Phoenix GPS claims sub-meter accuracy. Barring marketing lies,
this is not possible with only WAAS. WAAS would likely get you to 3
meter accuracy at best (Gerry N5JXS certainly knows more about this).
On Thu, 14 Feb 2008, Gerry Creager wrote:
> A lot of precision agriculture applications do need meter or better
> accuracies, especially if the GPS is driving the tractor. I'm not sure
> the Phoenix is the right answer for this, though, unless I got more
> information and had the opportunity to p
Couple of minor points, although Lance's pretty well on-track.
Lance Cotton wrote:
John Ronan wrote:
Assuming that WAAS signals are quite strong, what would the advantage be
between a Phoenix 200 Smart Antenna
http://www.ravenprecision.com/ca/Products/description.jsp?partNum=117-0171-071&Categ
John Ronan wrote:
Assuming that WAAS signals are quite strong, what would the advantage be
between a Phoenix 200 Smart Antenna
http://www.ravenprecision.com/ca/Products/description.jsp?partNum=117-0171-071&Category=1&Type=1
over a garmin GPS-18.
It's for an agricultural guidance solution they a
Hi,
A friend of mine asked me this question today,
Assuming that WAAS signals are quite strong, what would the advantage
be between a Phoenix 200 Smart Antenna
http://www.ravenprecision.com/ca/Products/description.jsp?
partNum=117-0171-071&Category=1&Type=1
over a garmin GPS-18.
It's for an
