Category Archives: Lidar/Imaging
Low-cost Tech for Aerial Archeology, Part Two
To round up this short series on low-cost approaches to aerial archeology surveying, we’ll look at an even lower-cost sensor technology that can be used in certain types of archeological projects. In the first part of this series we talked about how new, affordable multispectral sensors are being used with (relatively) inexpensive UAS to find...
Powerline Inspection
Drone? Ground? Helicopter? For years now drones, UAVs, UASs or whatever you wish to call them have been the revolution that promises to change the way we live. Five+ years into the drone revolution we are seeing some change—but it has certainly been a slower progression than expected. Linewise Aerial specializes in transmission line inspection...
Huge Airport, One Vehicle
Inventory of roadway and airfield assets, including pavement surfaces, using the “One Vehicle” collection approach. Dallas Fort Worth International Airport (DFWIA) is the second-largest airport by land mass (27 square miles) in the United States and the third-busiest airport in the world by aircraft movement.It can easily be considered a city of its own. With...
Improving GNSS in the Urban Canyon
To prepare you for the this blog post, I wish to point out that I am a geospatial expert and can hold my own around the ins and outs of survey, so going to an event at the Ordnance Survey on “3D mapping for the improvement of GNSS in urban areas” was an eye-opener. You...
Assessing the Potential
UAS-based Topobathymetric Lidar Surveys Understanding stream channel and floodplain morphology is critical for a number of efforts—from hydraulic modeling and stream-restoration design to aquatic habitat assessment. These applications require description of conditions both inside the channels and in the adjacent riparian zones. Gathering these data has typically relied on individuals on the ground or in...
Mexico City’s Transportation Revolution
Using drones, lidar, and BIM, enterprising surveyors and geospatial engineers designed and constructed the city’s first high-speed train system. Editor’s Note: Lessons learned from a problematic rail project in Mexico City prompted an initiative to pull out all technological stops for a subsequent new rail line. An innovative, tech-savvy firm that had demonstrated its capabilities...