Inside Unmanned Systems

JUN-JUL 2019

Inside Unmanned Systems provides actionable business intelligence to decision-makers and influencers operating within the global UAS community. Features include analysis of key technologies, policy/regulatory developments and new product design.

Issue link:

Contents of this Issue


Page 46 of 75

47 June/July 2019  unmanned systems inside knows that a majority of the mapping projects are linear in nature and this is really based upon how we how we do roads, rails, pipelines, powerlines. Everything out there needs to be mapped and there's a lot of demand for that linear nature." The technology, sensors, platforms and communication dev ices are out there, Hogan added. "So the technology itself can do beyond visual [BVLOS], honestly," he said. "The biggest question really when it comes down to it is, 'Do the regulations al- low for beyond visual line of sight?' " Depending on region and regulations, Microdrones solutions can offer a variety of options for BVLOS and UAV. Hogan, for example, detailed the Autobahn construction projec t mentioned ea rlier. " We made some adaptations to our communications to include LTE communications and a transpor ter transponder that met the German regulations for conducting beyond visual line of sight operations," he explained. " Those reg ulations were in place and allowed for that to happen so the mission was planned." The project f lew four separate f lights of two strips each, f lying down and back to allow for complete imager y. Flights were conducted at 100 meters and took approximately a half-day to collect the data. Hogan discussed a number of payload options and again emphasized just how much time can be saved and how much better the accuracy can be with the results. It's "very efficient from a time perspective," he summarized. "I think the most important part of it as a potential provider or someone that's doing this, it was one-third of the cost to collect that data." NEXT STEPS To explore LiDAR's full potential, and robust navigation in UAS-based mapping, it is essential to understand the current status of BVLOS navigation and mapping: g u id a nc e , r obu s t ne s s a nd a c c u r a c y; differences between traditional GPS and RTK positioning; what high-end LiDAR applications are available and what they can yield when integrated into specif ic airframes. Participants had the chance to ask questions during the webinar. Here are some of those questions: • How does using triple frequency in multi-constellation GNSS improve the accuracy and robustness of precision GNSS? How does that work? • Are there any special concerns related to precision GNSS that impacted performance? • How does RTK work in Africa or other places where you don't have a lot of ground infrastructure, or may not have a lot of satellite infrastructure? • What needs to happen to move forward and allow BVLOS mapping in both the United States and Canada? • Which flight environments require a dual antenna system? • What are the best sensors for certain types of linear infrastructure inspections? • Can you explain the optimal overlap; that is, when the client is only interested in horizontal measure, what further information do we really need? Can you elaborate some on ground control points? • Tell us about the software that you're going to need to manipulate and classify the massive amounts of points we're talking about here. • What if there is a GPS outage and how could it affect the navigation process? BY THE NUMBERS: PARTICIPANTS' VIEWS WHAT ATTENDEES WANTED TO KNOW What qualities of positioning are most important in UAV-based LiDAR? (select all that apply) Accuracy 89 % Integrity 43 % Availability 41 % Reliability 70 % What are the biggest challenges to deploying UAS-based LiDAR beyond visual line of sight? (select top two) Navigation equipage—ADS-B, radar or transponders 31 % FAA restrictions and getting improper waivers 79 % Data links—they need to connect as far as we can fly 49 % Sensors—low SWAP, high storage for BLOS 28 % What are the primary benefits to deploying UAS-based LiDAR? (select top two) LiDAR penetrates dense vegetation to map ground below 67 % Improved speed of data acquisition 46 % Can model narrow/sharp objects (transmission line and pipes) 35 % UAS is cheaper and lighter 34 % I prefer photogrammetry 6 % sponsored by TO HEAR MORE FOR YOURSELF, DOWNLOAD THE WEBINAR AT:

Articles in this issue

Links on this page

Archives of this issue

view archives of Inside Unmanned Systems - JUN-JUL 2019