I think it's very important to note that you're not "collecting data for NGS."?ÿ You and hopefully multitudes of others around the country are collect...

Yeah, it just doesn't seem like it's been that long.  As is so often said - seems like only yesterday - Renee sends you her regards.  

Yes Nezuko216 the UNAVCO estimates should probably give you what you need.  I should have thought of that - I claim a senior moment.  Good l...

HTDP works anywhere in the world.  You need to provide velocities from CORS in your area of interest - select "Specify the velocity in terms of n...

I think it's important to note that the DoD (DMA,NIMA,NGA) has never provided any high accuracy terrestrial realization of WGS 84 (passive or active c...

I don't think USGS ever built any towers - that was all USCGS/NGS.  All the marks were set by the recon/mark setter typically several months befo...

@nate-the-surveyor I’ve preached for years that any coordinates and/heights published without associated confidence info or metadata has all th...

With some rare exceptions there have been no systematic adjustments of the NAVD 88 since it was finalized in 1991.?ÿ If you are referring to GPS-deriv...

NGS will only provide a certificate for CEUs?ÿ if you are registrant for the first time that a presentation is offered and you stay on for the whole s...

A wee tune in honor of Dunkeld --

I'm staying neutral on this topic, but whatever you think please let NGS know.?ÿ It's really important that your opinion is heard by those who will ma...

Since you are not a surveyor, you are likely not familiar with the issues of referencing your positional information to "WGS 84."?ÿ Assuming your work...

As I noted in a recent post the NGS GEOID12B utility does provide their 2-sigma (95% confidence) for any geoid height.?ÿ Regrettably for some unknown ...

I find the uncertainty estimate of the Javad orthometric height interesting.?ÿ The report shows it to be identical to the ellipsoid height (.009 sft)....

OPUS uses only the published values.?ÿ How well CORS may be performing in the solution will show up in the peak-to-peak values for the latitude, longi...

NGS does a complete CORS network analysis of all 2000+ stations in a global solution every morning around 1ish.?ÿ The results are compared with the pu...

L5 is currently is in pre-operational status.?ÿ The Air Force won't go operational with L5 until the completion of the Next Generational Operational C...

A Harris should be very happy with the design for the new reference frame planned for 2022.?ÿ NAVD 88 (and the various island vertical datums) will be...

It pretty simple really.?ÿ I have collected 80 stations with NAD 83 coordinates published as part of the National Spatial Reference System that were o...

While it is certainly our intention to try and perform GPS observations at the site we expect that our effort may be impacted by a rather significant ...