Core Articles
Where Theory Meets Practice: Geodetic Observations: Part 1
Since the inception of GPS in the 1980s, surveyors have been presented with GPS baseline reduction results that list both geodetic azimuths and distances for the baseline vectors. In Part I of this article, I present the difference between the normal to the geoid and ellipsoid, which is known as deflection of the vertical, and...
xyHt: What Does It Mean?
Why did we pick an obscure geodetic expression as the name of our magazine? It’s not all that obscure—it represents a foundational element requisite to nearly all human endeavor. It touches your life explicitly and in the abstract. All of the ways that humans have measured and gauged their world, each of the conventions they...
What is xyHt?
Stand in the place where you live Now face North Think about direction Wonder why you haven’t before “Stand” – R.E.M. Why an obscure geodetic expression? It’s not all that obscure—it represents a foundational element requisite to nearly all human endeavor. It touches your life explicitly and in the abstract. All of the ways that...