An alternate hypothesis to that presented in the scientific paper the FoxNews site links is here: I have just downloaded the FoxNews linked paper and...

Moe Shetty, post: 316414, member: 138 wrote: I was recently involved in the measurement/recording of a new EDM calibrated baseline. It was fascinating...

It is geodesist. I am a retired one.I used "father of GPS" in quotes because there is some "controversy" with this article making the case for Roger E...

Dr Gary Jeffress of Texas A&M-Corpus Christi Presented a paper at FIG 2010 to address these issues. It can be accessed here: He also addresses the...

In case you don't know who he is, he was instrumental in the development of NAVSTAR GPS. After leaving the USAF he taught at Stanford.Some call him th...

See file dsdata.txt located here: When using NGS data sheets users should familiarize themselves with the notations used. I have copied the notations...

VERTCON is the official tool to compute shifts between NGVD29 and NAVD88. It is a model based on actual measured differences between points whose heig...

As you know better than I your accuracy needs, I provide the following comparison. Inverse distance between 803 and 804: 399.324Distance by Law of C...

Take a look at some of the stands and pillars as well as the information about training on astronomical observations here: A wooden stand like those i...

One of my old colleagues, now deceased, wanted to help create an organization of surveyors who could respond to disasters. He preferred the name "Surv...

Mark O, post: 370296, member: 11591 wrote: Sorry for the newbie question, but what is an "epoch"? Is it the time period for a satellite to orbit the e...

BTW, Mr Jesse Kozlowski posted a message to him from Mr Charles Glover describing the project mentioned above. It includes a number of lovely photos o...

Here is the spec sheet for "Big Red" note the longest line measured: 102 miles! Heard the stories; never used it. BTW there is Technical Report descri...

Computations of the gravimetric geoid are performed in ITRF (a three-dimension system). Determining an orthometric height from an ellipsoid height req...

It is not my experience that most HARN points are/were benchmarks. Perhaps in some areas that is the case not where I've worked. The impetus to establ...

rfc, post: 371013, member: 8882 wrote: I'm good....as long as the sun and the stars stay where they are.:-) Of course precise time is dependent on G...

Lecture notes for a class on this topic are here: A few minor clarifications: HPGN was High Precision Geodetic Network, the FBN, CBN and UDN designati...

You are right I do not understand your posting.My understanding was that you were comparing positions you derived for points in the NGS database with ...