February 2017

This issue of GIM International is partly dedicated to GNSS. Not only is positioning crucial for today’s geomatics professionals (one of whom is pictured on the front cover of this magazine), but GNSS also plays an essential role in people’s everyday lives. With an in-depth interview and a comprehensive article on GNSS, this issue brings you up to date on the current status. We also have a print edition. In this issue:

- Linking Space Technology and User Needs
- The Evolution of Lidar
- Investigation of 3D Modelling Techniques
- Precise Point Positioning from Combined GNSS
- Airborne Laser Scanning Using UASs
- Extracting More Value from Lidar Data
- And more...

Interview with GSA Executive.

Peter van BlyenburghPage 16-19: Title: Linking Space Technology and User Needs. Interview with Carlo des Dorides, Executive Director GSA. The core mission of the European Global Navigation Satellite Systems Agency is to ensure that Europeans get the most out of Europe’s satellite navigation programmes. In this interview: Galileo, EGNOS, Copernicus, UAVs, location-based services and much more.

3D Modelling Techniques

Page 16-19: Title: Investigation of 3D Modelling Techniques. 3D modelling and qeb-based visualisation of cultural heritage objects.  The author compares three technologies, based on real projects, and assesses their suitability for web-based visualisation of numerous objects of interest.

Evolution of Lidar

Page 37-39: Title: The Evolution of Lidar. In order to take a next step in airborne Lidar system development, the required energy per pulse must be reduced. Next-generation Lidar technologies, including single photon Lidar, rely on new range-finding systems to achieve lower energy consumption and higher pulse rates.

Precise Point Positioning

Precise Point Positioning from Combined GNSSPage 20-23: Title: Precise Point Positioning from Combined GNSSFugro operates a worldwide network of reference stations capable of tracking GPS, GLONASS, BeiDou and Galileo systems and this network is used to calculate precise satellite orbit and clock corrections of all four constellations in real time for maritime applications. This article describes the recent developments and the resulting accuracy of PPP with integer ambiguity resolutions (IAR).

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