[AT] Re Driving to Unionville Missouri

[charlie hill]

They all work from the same satellites.   The government has the right and 
ability to introduce a small error into the satellite signal in order to 
slightly decrease the accuracy of the civilian versions.
This only throws them off a few feet, generally around 30' I believe.  The 
military units have the code to take the error out.    I have an old 2nd 
generation GPS that came out just after GPS became available to the public. 
It sees and reads every satellite in view, which is generally 10 or 11, just 
like the military units do.



-----Original Message----- 
From: henry miller
Sent: Thursday, August 02, 2012 7:01 AM
To: Antique tractor email discussion group
Subject: Re: [AT] Re Driving to Unionville Missouri

Maybe the military GPS is better, but the worst civilian ones are still 
plenty good. When google earth shows you are at the house next door that 
might be GPS - everything farther away than that is bugs in google earth. 
Google's maps contain a lot of errors, and they don't seem to be doing much 
to fix them. Most of the time they will get you close, but that is the most 
you can ask. You will often have to drive around a bit to find where you you 
want to be.

I work with precision GPS, we can get you within 1 inch of where you want to 
be. But that doesn't stop us from trying to get you to 1 inch of the wrong 
house.
-- 
Sent from my Android phone with K-9 Mail. Please excuse my brevity.

Mark Greer <markagreer at embarqmail.com> wrote:

Funny you mention that, I had a conversation with some recently out vets 
yesterday at a factory in Orrville. Their take is that civilian GPS and what 
they used in Iraq and Afghanistan are worlds apart in accuracy. What we have 
access to and what the military uses are two very different animals.
Mark

----- Original Message -----
You mean Google Earth is wrong again? I have entered known street addresses 
into it, and had the program identify places that were several miles away 
from the real target. It makes you wonder about our military guiding drones 
into remote areas from the comfort of their air-conditioned offices that are 
half a world removed.

Larry
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