As the GEOCON documentation states:GEOCON employs high resolution grids (1 arcminute by 1 arcminute) to obtain unprecedented fidelity in modeling coor...

JOHN NOLTON, post: 370670, member: 225 wrote: Loyal years back (33 years) the FGCC which is now FGCS (Federal Geodetic Control Subcommittee) started t...

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Were you using NADCON or GEOCON? or GEOCON11 This tool was developed for transformations between the most recent versions of NAD83.

Bow Tie Surveyor, post: 369953, member: 6939 wrote: I went to upload some data to OPUS this morning and noticed that there were no antennas to select....

I computed the plane coordinate inverse and compared the results from the NGS INVERSE and INVERS3D tools.My summary in meters follows:INVERS3D output ...

rfc, post: 369072, member: 8882 wrote: No gun in play yet.I took the Mark to Mark Distance from the Inverse3D sheet: 842.8015 meters. I put the SP coo...

BTW, came across some surveying pillars in the vicinity of the Sydney Opera House. See: While on a hiking trip in Ireland more than a few years ago, ...

wilba, post: 368697, member: 9024 wrote: I'm an occasional Trigpointer! trigpointing.ukWished we had the OPUS system in the UK though.I hope you are a...

For those mathematically inclined, Hotine's Mathematical Geodesy is available on-line at: BTW, see this example of a South Texas pillar monument:The d...

In the US use The page also provides some details about the how and why.A good summary of height systems and their definitions is here: HTH,DMM

anmps, post: 179683, member: 6950 wrote: Dear Sir Greetings for the day. With reference to the this website. We have some Wild T2 theodolites in india...

Those interested in the minutiae of orbit calculation, combination, QC and dissemination can monitor the process via IGSMail. Some examples of what's ...

Sorry about that. BTW, a more accessible article on the issue of Earths tipping 's here: It was linked from the GRACE site:

Actually the nice explanation to which I referred is section 1.2 on page 5 (printed page). The maths starting on 61 are nice in a different way...

rfc, post: 366860, member: 8882 wrote: I know it's not Friday, the day I usually ponder the larger ponderables before heading out into the field, but ...

If my post seemed harsh it was because your situation brought back bad memories of observers occupying wrong disks and adding work days to projects. O...

One other comment. You have occupied a point you say is an NGS-published monument with a good position. From this point you have a geodetic azimuth (d...

As for 3., I don't know what to think. This Grasshopper's first instinct is certainly NOT to claim an NGS documented survey mark is in the wrong place...

I suggest you take a look at the NGS Geodetic Glossary here: UTM and State Plane are projected from geodetic coordinates: latitude and longitude. Ther...