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Has any one done any thing with Differential Global Positioning System.  
I was told it can improve GPS accuracy to 1' or less.

I works on the principle of setting one Gps on a known surveyed marker.  
The gps data goes into a computer which is compared to the known 
location.  A correction factor is then sent out to second gps and laptop 
that is mobil.  The correction factor is applied  and  amore accurate 
location is  established.  Sounds like a PIC and GPS unit.

But then in the world of  Deg., Minutes and seconds how long is a Tenth 
of a second in Feet or meters?


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begin:vcard
fn:Robert I. Nelson
n:Nelson;Robert I.
org:RIN Designs
adr:;;P.O. BOX 373;RIPON;WI;54971;USA
email;internet:rindesigns@charter.net
tel;work:1-(920)-229-7152
tel;home:1-(920)-748-7443
note;quoted-printable:Custom design and building of small electro mechanical devices.=0D=0A=
	AUTOCAD work ver2002 
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