Our friends at OpenDataNI have been busy securing some fantastic spatial data sets for public use. in particular LiDAR surface elevation data collected by various NI Government Departments over the last 12 years. I’ve covered LiDAR technology in a previous post showing how it…
Where Am I Now? Developing an Open RTK GNSS Positioning Service for Belfast. Part 1
RTK GNSS? How Does That Work? For years land surveyors and geospatial professionals have been using a very accurate global coordinate positioning technique called Real Time Kinematic or RTK. RTK uses two or more GNSS receivers. GNSS is a modern…
Why High-Precision GPS is Important – A Post from Neolithic Shetland!
Dr Will Megarry, Centre for GIS and Geomatics, School of Natural and Built Environment, Queen’s University Belfast Shetland, 2nd June 2017 [The North Roe Felsite Project has been funded by the National Geographic Northern European Exploration fund] INTRODUCTION Global…
Ireland’s Surveying Heritage – past, present and future.
Beginning a series of guest posts by colleagues utilising Geographical Information Science at GAP, Professor Keith Lilley writes on the often overlooked but internationally important survey heritage of the Island of Ireland. Ireland was the first country in the world to be fully surveyed…
Aerial Light Detection and Ranging (LiDAR)
To begin a series of posts about some of the mapping techniques we utilise at the Geographical Information Science (GIS) Research Unit here at SNBE, lets take a look at Aerial LiDAR. Aerial based Light Detection and Ranging (LiDAR) has become…