To fly unmanned drones in shared airspace with conventional manned aircraft (or with other drones) is dangerous without a means for planes to know where other aircraft--manned and unmanned--are. Termed “sense and avoid” (or “see and avoid”) this technology is a key but difficult piece of our drone-enabled future, and the Army just took some huge steps toward making it a reality.
The Army just wrapped a two-week trial of its Ground-Based Sense and Avoid system (GBSAA), and the results were overwhelmingly positive. There are two ways to accomplish sense and avoid: either imbue every aircraft with the sensor technology or the autonomous smarts to know when it comes into close proximity with another aircraft, or create a ground-based system that acts as a kind of automated air traffic controller for drones, notifying UAVs and their pilots when they are on dangerous paths, prompting them to alter courses.
The Army has been testing the latter for use around its domestic bases via a series of “vignettes” in which it used live Shadow unmanned aircraft to demonstrate the viability of their system.
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