The ability of on-line GNSS processing tools to replicate published positions for survey monuments is dependent on the quality of the position we seek...

I do hope that there will be a good number of GPS observations on bench marks and commend those undertaking this service to the NSRS.?ÿI have always r...

Sorry for the delayed reply. Hopefully I have not made any more transcription or math errors. With respect to your graphic, you indicate it shows the ...

Wrong graphic in previous post. The Laurentide Ice Sheet extent is shown here. BTW, here is a better graphic showing Glacial Isostatic Adjustment (GIA...

Sorry for being so dense, but I had problems following your graphic.?ÿI plotted the points on Google Earth Pro and used its tool to determine the dist...

Nice project and thanks for all the details. I hope to have time for a closer examination. I was curious about your source for the deflection of verti...

In addition to topography have you looked at the geology of your area? I am not sure what NGS would do with submissions on what you indicate to be sus...

FWIW, Anyone wondering how one might use the translations provided by MKennedy above to derive an NAD27 geographic coordinate from WGS84 geographic co...

Yes. I do not see any mention of Belizeƒ??s involvement. There is a SIRGAS site in Belize (unless my knowledge of Central American geography is wrong)...

FWIW, This shows the various ƒ??Versionsƒ? of WGS84. from:?/p> BTW, the WGS84 Standardization document is here:?/p> Lots of good details and maths. ...

I always thought that the appropriate coordinate system to use was the one your organization or your client specifies. As Mr Hamilton writes above, th...

WRT my post, I though Mr. Billings was interested in the particulars not implementation of a dynamic reference frame. I always understand the mission ...

FWIW, The links below provide some information about the issues raised in these posts. SNARF is a project started in the early 2000s to detail approac...

Do you mean factorial? Symbol is ƒ??!ƒ?

Related to the issue is Robustness Analysis described here:?/p> ?ÿ

Many least squares packages include the ability to run simulations. You can explore different observing scenarios and obtain estimates of results. Rev...

Howdy,?ÿ I miss Maryland crab cakes... Lots of gentrification in the historic working class neighborhoods.?ÿ

FWIW, Looking at?and the screen captures below (from the qc full option) might be of some help. I do not know whether your summary file was run in "li...