Another example- the county I'm working is slightly larger than the state of Rhode Island but has less than 3,500 people.

Yeah, can be pretty empty out here. In fact, if you combine the populations of OKC and Tulsa proper, not even including the surrounding metro areas, ...

Thanks Deral. I do realize I can get cm-level accuracy, but it was not clear to me (or my superiors when they purchased the equipment) the limitation...

>by linebender @, Wednesday, October 17, 2012, 14:31 (22 hours, 38 minutes ago) @ dliviskieSkieThe chance that the datasheets are off as much as yo...

You are correct in your perception that I am not a surveyor. I'm just a technician trying to do the best I can. I don't believe anyone in our agency...

I did download CORS data from the nearest station, CLK5, but it's about 75 km from the HARN closest to it. There is another continuously recording st...

> > We have a Trimble setup of three R3 receivers with A3 antennas> > I overlooked this in your original post. The R3 -- I had to look i...

Jim, > Project Settings|Baseline Processing|General|Antenna model. You'll be able to >select NGS Absolute from the drop-down menu. (P.S. I ha...

The PID is AC7974. Here is a copy-paste of the first page of the NGS data sheet:DATASHEETS The NGS Data SheetSee file dsdata.txt for more informatio...

> Your questions indicate that you may be in way over your head. Accurate transfer of orthometric heights via GPS isn't a trivial undertaking. If...

Yep, they were all HARN. They all had NGS data sheets and were posted on the South Dakota DOT map of HARN sites and level routes. I found them all a...

> The data sheets represent a snap shot in time of the published position and the accuracy tolerance should be listed on said sheets accordingly. W...