MathTeacher, post: 455179, member: 7674 wrote: Fascinating concept. The sea level distance, 35,373.21 meters, is the ellipsoidal distance on the Clark...

See: The NGS description software includes defaults for the variety of monument types. With the inclusion of monument photos it is easier to determine...

Bill93, post: 454042, member: 87 wrote: That's for the data sheets. But remember that any calculation of those values from a GNSS-derived ellipsoidal...

My response (not using your numbering):1. Regarding your starting comment: No. The Dynamic Height listed on the NGS Data Sheet is not listed as GEOID1...

Correctly estimating the impact of the wet part of the troposphere remains a significant impediments to achieving accurate ellipsoid heights using GNS...

I would expect that the user manuals would at least list the model used or those available.As for the government/university tropo modeling and the rel...

Try NGA at: Oops. They have updated their site and have a new page at: Ephemerides are linked from bottom of this page.BTW, The Ohio State University...

He has a site with corrections at: You can also submit error reports.I guess he no longer has academic slaves (i.e. graduate students).

A strong statement indeed. Equally strong is the assertion that a SBP including all possible baselines (n!/2(n-2)!) baselines is equivalent to a MBP (...

Another paper to consider is here: BTW, I posted without comment an extract from Prof Dr Gunther Seeber's text: "Satellite Geodesy." I did so to highl...

Dr Craymer's paper mentioned above is available from his new (to me) website at: Lots of good stuff.BTW, briefly reviewing the postings, I note thebio...

John Hamilton, post: 446343, member: 640 wrote: When I went to Helsinki in May/June I stayed at Finlandia Park Hotel. It was not in the downtown area,...

Tom, I commend your interest in helping to improve the hybrid geoid model. I am glad you clarified that you understood the point you observed was not ...

FWIW, I neglected to note that the site page posted by Mr. Hamilton states the following:All papers presented at INGEO Conferences are in FIG Library ...

As can be seen from the data sheet, the published elevation is by VERT ANG (vertical angle) in NGVD29 and transformed to NAVD88 via VERTCON. As such i...