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From Meters to Centimeters

Understanding correction services for GNSS By Towfique Ahmed Real-time correction services were created to enhance the accuracy of Global Navigation Satellite Systems (GNSS), reducing errors from tens of meters to precise, centimeter-level measurements. While some applications can function with sub-meter accuracy—such as those supported by regional Satellite-Based Augmentation System (SBAS) solutions—surveying requires far greater precision....

Located: April 2025

Compiled by Jeff Salmon Europe Kickstarts its Own Sat-Com The European Union will soon boast its own secure communication satellites system similar to Starlink with the signing of a new space contract in Brussels, Belgium, in December.   IRIS², short for Infrastructure for Resilience, Interconnectivity and Security by Satellites, will be composed a multi-orbital constellation of 290...

Hardwired to Build

This cybernetics engineer is laying the groundwork for robust automated systems that will help us construct our future spaces. Her spider-crane robots are already showing how it’s done. Dr. Anja Lauer is on a mission to help the construction industry build better. As the founder of the Department of Construction Robotics at the University of...

xyHt Digital Magazine: April 2025

xyHt magazine’s April issue focuses on surveying and takes an in-depth look at the modern state of the art of surveying. As always, if you don’t have a subscription to our print edition, or if someone else in the office has snaffled your copy, don’t fret, here is the digital edition. Click here or on the cover...

Creating Digital Twins for Water Resource Management in Caves  

A substantial part of Switzerland’s water resources exist in its complex karst aquifers, a critical natural system that continues to pique the interest of researchers. At the Neuchâtel Centre for Hydrogeology and Geothermics (CHYN), a team of scientists led by Professor Phillipe Renard and accompanied by climate scientist Dr. Tanguy Racine launched an initiative seeking...

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