Category Archives: GNSS/Location Tech

Inexpensive Does Not Mean Cheap

A revolution is happening in affordable surveying and geospatial instruments and solutions: high-precision positioning has become much more accessible and affordable for existing and emerging end-user constituencies. Many folks may have found high-precision prohibitively expensive in the past or were resigned to low-precision choices, but now there are a lot more solution developers, manufacturers, and...

Survey-grade PPP

Above: Using a real-time PPP-capable GNSS rover on the Wicklow coast of Ireland. Credit: Niall Hand, Korec Group. Has real-time precise point positioning finally hit prime time for surveying applications? The answer is a qualified yes. The dream of being able to achieve survey-grade (2cm horizontal and 5cm vertical) GNSS-derived positions without post-processing, a base,...

Seen at HxGN LIVE 2019

BLK2GO SLAM (simultaneous localization and mapping) lidar handhelds have become popular for BIM, as-builts, and rapid 3D modeling. The new Leica Geosystems BLK2GO shares some of the core technologies of earlier members of the BLK family (like the BLK360 scanner). What distinguishes this from many of the other SLAM handhelds is that it utilizes cameras...

Dr. Gladys West

The quiet dedication of a hidden hero who made satellite geodesy and global positioning possible. As early as high school, the focused determination of Dr. Gladys West would see her rise to make key contributions to one of the most impactful scientific endeavors of our age. In our recent interview with xyHt magazine, West gave...

Esri UK Conference 2019 Recap

Every year towards the end of May, Esri UK, the UK distributer for Esri software, holds a user conference across the road from Westminster, the home of the UK parliament (when I was there I even got to see Jacob Reese Mogg). It’s held at the QE2 centre, and there are amazing views from the fifth floor which allow...

Understanding GNSS Pt. 2

Vertical Datums Part 1 covers ellipsoids, datums, and realizations and is in the April print issue. This final part covers vertical datums. From my previous article: One of the most important things to understand when it comes to using survey-grade GPS systems is the difference among the many datums, reference ellipsoids, and coordinate systems that...