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Confusing Difference Between GPS and Total Station Measurments
Posted by Frank Willis on February 1, 2017 at 1:11 pmwrong category. I moved it to the Surveying category. sorry.
Frank Willis
Mark Mayer replied 7 years, 7 months ago 3 Members · 2 Replies -
2 Replies
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Yes, because the data collector is reducing both to grid.
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Frank Willis, post: 411848, member: 472 wrote: wrong category. I moved it to the Surveying category. sorry.
Frank Willis, post: 411854, member: 472 wrote: Thread below got too complex and personal. Rephrased a different way for simplification, here goes–Two examples. This ought to be a test question on the national exam.
- John Doe is in the flat lands of Florida, at elevation 80 feet NAVD.
- He sets his RTK GPS system in to the Florida State Plane projection of the location he is surveying, and he sets his base up and simply uses an autonomous position for the base (one minute observation prior to base transmitting corrections).
- …..
- Can he expect that his inverse on data collector show that his GPS and Total Station measurements of distance will match within 1:10,000?
He can expect a perfect match. Because the data collector being set to the SP zone will handle the scaling/projection mathematics.
If he used a local/no projection setting in his dc for the TS portion of the work and measured with the TS between the RTK’d points (or, if he measured the distance with a perfectly handled and corrected tape) and he should expect a distance that matched within 1:10000.
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