Strong geometry vs. weak geometry is something that should be understood by those of us who are working in the field and using traditional line-of-sight instruments such as total stations. What is strong geometry and weak geometry?
Differential leveling is the process of measuring vertical distances from a known elevation point to determine elevations of unknown points. The most common methods to determine elevation are through the use of 1)
This article is dated, but very comprehensive. Written by one of the early users of the program that uses it in ways even the programmer didn't think of initially and helped to steer its upgrades.Good read.http://www.johnson-frank.com/articles/StarNe
It be time to stop thinking about our work in terms of closure. Most everything we rely on is moving away from that and towards positional certainty (error theory based statistics). NGS, standards, etc...