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<DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">
<DIV>I want to know who was flying plane?</DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">
<DIV style="FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=John.Sykes@dep.state.fl.us
href="mailto:John.Sykes@dep.state.fl.us">Sykes, John</A> </DIV>
<DIV><B>Sent:</B> Friday, March 08, 2013 9:47 AM</DIV>
<DIV><B>To:</B> <A title=Jim@gpserv.com
href="mailto:Jim@gpserv.com">mailto:Jim@gpserv.com</A> ; <A
title=aknight@fnai.org href="mailto:aknight@fnai.org">'Amy Knight'</A> ; <A
title=shrug-l@lists.dep.state.fl.us
href="mailto:shrug-l@lists.dep.state.fl.us">shrug-l@lists.dep.state.fl.us</A>
</DIV>
<DIV><B>Subject:</B> RE: shrug-l: Google earth accuracy
estimate?</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">
<DIV class=WordSection1>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Agreed, that is why I took 10 to
20 readings over a several day period and averaged them.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">The Garmin is an aviation
hand-held version, but an old one. I got it when they first became
available for aircraft. I had it with me on a trip from Philly to Florida
(via Atlanta) in the early 1990’ (pre-9-11 days). It was on a MD88
equipped with R-NAV and maybe INS (but probably not). The Flight Attendant
apparently told the captain that the passenger in row whatever had a strange
type of radio with him. The captain came back to my row and sat down next
to me. I asked him if he knew exactly where we were and how fast we were
moving (because of summer thunderstorms we were a lot further west than
planned). He looked at the display on the Garmin and said, “Probably not
as accurately as you do.” A few minutes later, he sent the First Officer
back to “get a load of this”.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Brush Script MT'; COLOR: #1f497d; FONT-SIZE: 24pt">--
John</SPAN></B><SPAN style="COLOR: #1f497d; FONT-SIZE: 24pt">
<o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> Jim Robeson
[mailto:jim@gpserv.com] <BR><B>Sent:</B> Friday, March 08, 2013 9:36
AM<BR><B>To:</B> Sykes, John; 'Amy Knight';
shrug-l@lists.dep.state.fl.us<BR><B>Subject:</B> RE: shrug-l: Google earth
accuracy estimate?<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p></o:p> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Gamins and Tom Tom for vehicles
have a good bit of modeling in their display when using on a street map product;
snap to the line. But they are typically 3ish meters in a good place and
5-10, maybe even more, in a really bad place. Bad being in around
buildings or a heavy multipath environment. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black">R</SPAN><SPAN
style="COLOR: black">egards,</SPAN><SPAN
style="COLOR: #1f497d"><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'ParkAvenue BT'; COLOR: #1f497d; FONT-SIZE: 18pt">Jim
Robeson<o:p></o:p></SPAN></B></P>
<P class=MsoNormal><I><SPAN
style="FONT-FAMILY: 'Freestyle Script'; COLOR: #1f497d; FONT-SIZE: 10pt"><o:p></o:p></SPAN></I> </P>
<P class=MsoNormal><B><SPAN style="COLOR: #1f497d">James M.
Robeson<o:p></o:p></SPAN></B></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d; FONT-SIZE: 8pt">Mapping/GIS
Sales, Trimble Certified Trainer <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 8pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><IMG id=Picture_x0020_1
alt="new logo quarter" src="cid:E1C01E01A94B4D0983B30CBCCB57B8DB@katPC"
width=264 height=120></SPAN><SPAN
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</SPAN><B><SPAN
style="COLOR: #1f497d; FONT-SIZE: 10pt">
</SPAN></B><SPAN
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<o:p></o:p></SPAN></P>
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<P class=MsoNormal><B><I><SPAN
style="COLOR: red; FONT-SIZE: 12pt">NOW</SPAN></I></B><B><SPAN
style="COLOR: red; FONT-SIZE: 12pt"> <I>with the </I></SPAN></B><B><I><SPAN
style="FONT-FAMILY: 'Arial Black','sans-serif'; COLOR: red; FONT-SIZE: 12pt">only</SPAN></I></B><B><SPAN
style="FONT-FAMILY: 'Arial Black','sans-serif'; COLOR: red; FONT-SIZE: 12pt">
</SPAN></B><B><SPAN style="COLOR: red; FONT-SIZE: 12pt">Trimble Survey and
Mapping Repair Center in Florida!<o:p></o:p></SPAN></B></P>
<P class=MsoNormal><U><SPAN style="COLOR: #1f497d; FONT-SIZE: 12pt"><o:p><SPAN
style="TEXT-DECORATION: none"> </SPAN></o:p></SPAN></U></P></DIV>
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<DIV>
<P class=MsoNormal><B><U><SPAN
style="COLOR: #1f497d; FONT-SIZE: 12pt">Tallahassee
Office<o:p></o:p></SPAN></U></B></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Phone (850)
656-6075
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Cell (850) 212-0030<BR>Fax (850)
656-1350<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><A
href="mailto:Jim@gpserv.com">mailto:Jim@gpserv.com</A><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><A
href="http://www.gpserv.com/">GPServ.com</A><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><B><U><SPAN style="COLOR: black; FONT-SIZE: 12pt">Corporate
Office <o:p></o:p></SPAN></U></B></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">621 Brookhaven Drive</SPAN><SPAN
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<P class=MsoNormal><SPAN style="COLOR: #1f497d">Orlando, FL
32803-2503<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Phone: (407)601-5816
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Fax: (407)601-5826
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style="PAGE-BREAK-BEFORE: always" clear=all></SPAN>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"> <B>Products</B>:
</SPAN><B><SPAN style="COLOR: #1f497d; FONT-SIZE: 8pt">Trimble Mapping, Trimble
Survey, ESRI, Leica HDS Laser Scanners, LTI, Ricoh, Laser Craft,
SECO</SPAN></B><SPAN style="COLOR: #1f497d"> <o:p></o:p></SPAN></P>
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<DIV>
<DIV
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> <A
href="mailto:shrug-l-bounces@lists.dep.state.fl.us">shrug-l-bounces@lists.dep.state.fl.us</A>
[<A
href="mailto:shrug-l-bounces@lists.dep.state.fl.us">mailto:shrug-l-bounces@lists.dep.state.fl.us</A>]
<B>On Behalf Of </B>Sykes, John<BR><B>Sent:</B> Friday, March 08, 2013 9:28
AM<BR><B>To:</B> 'Amy Knight'; <A
href="mailto:shrug-l@lists.dep.state.fl.us">shrug-l@lists.dep.state.fl.us</A><BR><B>Subject:</B>
RE: shrug-l: Google earth accuracy estimate?<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p></o:p> </P>
<DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">There are errors when using
Google Earth or Google Maps to plot lat/longs in Florida. But in my
experience they are relatively minor, because Florida is FLAT! In my
experience elevation differences cause many if not most of the errors. The
major problems I see involve plotting addresses, where things may be off by half
a block. If you find the particular building and plot it, it usually is
accurate to about 10 meters or better. Part of the error comes from the
aerials used and how well they were georeferenced. Since most aerials for
the State are now being flown with a digital linear scanner, they are much less
prone to these errors.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I just checked my own home,
where I have a very visible location on my back deck that I have used to check
several GPS’s for accuracy. Pulling the Google Earth lat/long quickly
(they have a brand-new aerial, shot only a few months ago) and comparing it to
the GPS average was within 1 meter. T’ain’t too shabby! Probably 1
ft of that error is my shaky hand on the trackball. Oh, by the way, they
weren’t survey-grade GPS’s either; 1 Garmin, 1 DeLorme and my roommate’s
TomTom. But I took several readings on different days and averaged them
out.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Brush Script MT'; COLOR: #1f497d; FONT-SIZE: 24pt">--
John</SPAN></B><SPAN style="COLOR: #1f497d; FONT-SIZE: 24pt">
<o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p></o:p></SPAN> </P>
<DIV>
<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN> </P></DIV>
<DIV>
<P class=MsoNormal><EM><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Please take a few
minutes to share your comments on the service you received from the department
by clicking on this link <A
href="http://survey.dep.state.fl.us/?refemail=John.Sykes@dep.state.fl.us"
target=_blank>DEP Customer Survey</A>.</SPAN></EM><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 9pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> <A
href="mailto:shrug-l-bounces@lists.dep.state.fl.us">shrug-l-bounces@lists.dep.state.fl.us</A>
[<A
href="mailto:shrug-l-bounces@lists.dep.state.fl.us">mailto:shrug-l-bounces@lists.dep.state.fl.us</A>]
<B>On Behalf Of </B>Amy Knight<BR><B>Sent:</B> Thursday, March 07, 2013 10:55
AM<BR><B>To:</B> <A
href="mailto:shrug-l@lists.dep.state.fl.us">shrug-l@lists.dep.state.fl.us</A><BR><B>Subject:</B>
shrug-l: Google earth accuracy estimate?<o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><o:p></o:p> </P>
<P class=MsoNormal>Hi- A year or so there was SHRUG exchange of ‘bad’
google earth examples. Does anyone know of an accuracy estimate for
Florida? We receive point location data from many different sources but
more and more data are coming in with Google Earth as the source of the location
(lat/long). We need to be able to say what locational uncertainty
those data have. How ‘off’ could a point be, plotted on Google Earth
vs. Florida aerial ortho imagery? Thanks for any
information-<o:p></o:p></P>
<P class=MsoNormal>Amy <o:p></o:p></P>
<P class=MsoNormal><o:p></o:p> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">Amy
Knight</SPAN><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">GIS
Program Specialist</SPAN><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">Florida
Natural Areas Inventory</SPAN><SPAN
style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">Florida
State University</SPAN><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">1018
Thomasville Rd, Suite 200-C</SPAN><SPAN
style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">Tallahassee,
FL 32303</SPAN><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt">Ph.
850-224-8207 x214</SPAN><SPAN style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
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style="FONT-SIZE: 8pt"><o:p></o:p></SPAN></P>
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