Fortem Technologies
The addition of radar technology such as this compact 3D radar to existing ground detect and avoid systems is showing great promise for improving the safety of airspace populated by multiple drones.

Radar Helps Improve the Safety of UAS

Jan. 9, 2019
Testing with three drones demonstrated the effectiveness of using a small radar for improved safety in the air, especially around airports with larger aircraft.

Radar technology has long been an essential electronic tool for manned military aircraft, warning of oncoming threats in distant airspaces. It may soon prove to be as vital for unmanned aircraft systems (UASs) used for military operations. Flight experiments recently conducted at a Boeing Co. subsidiary, Aurora Flight Systems, in Manassas, Va. showed great promise when combining a small available airborne radar system to existing airborne electronic safety systems.

In the experiment, a small airborne radar system was added to an Inexa Access ground detect and avoid system from Boeing subsidiary Insitu, with the intent of helping the ground-based operators of UAS aircraft to better visualize the air space and air traffic of the unmanned aircraft they are piloting. The experiment involved outfitting a Centaur aircraft (which is an optionally piloted vehicle) from Aurora with a small radar system to serve as a surrogate for a ScanEagle3 UAS aircraft from Insitu.

A second Centaur aircraft and a Cessna 172 Skyhawk single-engine aircraft from Cessna Aircraft Co. were used as enemy aircraft in the same space as the radar-equipped UAS aircraft to evaluate its responsiveness to collision-type flight patterns from the other aircraft. GPS data from all three aircraft allowed the team to determine the accuracy of the aircraft location data derived from the airborne radar.

These experiments demonstrated the effectiveness of adding even a small radar system to the existing safety systems in the process of developing safer autonomous UAS flight systems. “Boeing’s airspace access solution is already used around the world,” said Jim Bray, project manager. “This flight experiment adds a small airborne radar to improve the comprehensive safety case we can offer our customers.” The small radar system was developed by Fortem Technologies, a supplier of advanced radar systems for manned and unmanned aircraft, highly focused on improving airspace safety by means of advanced drone detection.

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