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Stupid GPS Question....

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(@mrsurveyor)
Posts: 13
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Topic starter
 

Was wondering something last night... If I were to take a shot with my GPS here in TN, then walk about 200 feet in a direction towards sydney Australia, store the point.... Then stake to that line while standing Sydney Australia, would my GPS left and right and tell me to cut 344,864,520 feet, or just be totally confused?

 
Posted : February 18, 2017 7:50 pm
MightyMoe
(@mightymoe)
Posts: 9987
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You would see a bunch of ???????

 
Posted : February 18, 2017 8:02 pm
(@back-chain)
Posts: 468
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Just what I needed. Thanks for putting it all in perspective.

 
Posted : February 18, 2017 8:06 pm
nate-the-surveyor
(@nate-the-surveyor)
Posts: 10522
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Well, it depends. Various software handle this problem differently. It would probably tell you right, left, and station. But, you'd have to move your base station. Or, use floats, if the base were in USA, and the rover, in Australia, because they would not have any sats in common. I suggest a post processed solution. more or less.

 
Posted : February 18, 2017 8:23 pm
MightyMoe
(@mightymoe)
Posts: 9987
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When you exit the area of the imbedded geoid model the GPS will be confused and give you ? marks. Now if you stand in TN and stake to a point in OZ im not sure, you could give it a try.

 
Posted : February 18, 2017 8:30 pm

(@back-chain)
Posts: 468
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To clarify, my post was written to the OP. [USER=700]@MightyMoe[/USER] , if you were responding to me, thanks. At the time, I was fuming over the inability of a previous surveyor on a simple lot survey. The OP was just the thing to take my mind off that issue.

Through this exchange I see where the old format had some advantage.

 
Posted : February 19, 2017 6:23 am
holy-cow
(@holy-cow)
Posts: 25369
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My great-grandpa told me the black box is always correct, in a Tweet. He told me he learned that from his grandpa who surveyed with Abe Lincoln in Wyoming.

 
Posted : February 19, 2017 6:40 am
MightyMoe
(@mightymoe)
Posts: 9987
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back-chain, post: 414872, member: 7900 wrote: To clarify, my post was written to the OP. [USER=700]@MightyMoe[/USER] , if you were responding to me, thanks. At the time, I was fuming over the inability of a previous surveyor on a simple lot survey. The OP was just the thing to take my mind off that issue.

Through this exchange I see where the old format had some advantage.

Nah, I was only replying to the OP. I've had some experience with exiting the parameters of a projection and seeing what it does in the DC;)

 
Posted : February 19, 2017 10:10 am
dave-karoly
(@dave-karoly)
Posts: 12001
Member
 

Holy Cow, post: 414874, member: 50 wrote: My great-grandpa told me the black box is always correct, in a Tweet. He told me he learned that from his grandpa who surveyed with Abe Lincoln in Wyoming.

Did you know two of John Tyler's (b.1790) grandchildren are still alive?

 
Posted : February 19, 2017 10:45 am
holy-cow
(@holy-cow)
Posts: 25369
Supporter
 

That darned Dave Karoly knows everything..........................

http://www.snopes.com/history/american/tylergrandsons.asp

 
Posted : February 19, 2017 6:32 pm