Air Hockey
Safer skies (MIT)
The Federal Aviation Administration (FAA) has mandated that by 2020, all
commercial aircraft — and small aircraft flying near most airports — must be
equipped with a new tracking system that broadcasts GPS data, providing more
accurate location information than ground-based radar. In anticipation of the
deadline, the FAA has also charged MIT researchers with leading an
investigation of the system’s limits and capacities.
In October, at the 30th Digital Avionics Systems Conference in Seattle, MIT
researchers will present an early result of that investigation, a new
algorithm that uses data from the tracking system to predict and prevent
collisions between small aircraft. In the last 10 years alone, 112 small
planes have been involved in midair collisions, and thousands more have
reported close calls.
The chief challenge in designing a collision-detection algorithm, says Maxime
Gariel, a postdoc in MIT’s International Center for Air Transportation and
lead author on the new paper, is limiting false alarms. “If half the time it’s
a false alert,” Gariel says, “[people] are not going to listen to it, or
they’ll turn it off.” At the same time, the algorithm has to have some room
for error: While GPS is more accurate …
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