The next time you fly into Florida’s Fort Lauderdale airport, look out the window and see if you can spot what’s missing. The answer? A 160 feet high tower.
That’s what airport officials at the airport say would have been necessary for them to be able to safely control the movement of planes on the ground, taxiing to and from gates and runways at the recently expanded airport. That would be doing things the old fashioned way, by line-of-sight—aka looking at the planes. Instead of an elevated perch, ground controllers at FLL have an even better view from inside a nearby squat, building.
“They have no windows in their building,” says Mike Nonnemacher, the chief operating officer for Broward Country Aviation Department, which controls FLL airport. “It’s all done by radar, and augmented by a system of CCTV and infrared cameras.” A new computer system takes the data from those cameras, and other sensors, and stitches it together into one giant virtual vista.
Controllers sit in front of a video wall, which shows them what’s happening in real time. The infrared images offer improved visibility at night and in the fog. Wearing headsets, they calmly issue cryptic sounding instructions to pilots, and then track the plane moving. It’s the first of its kind in the US, and could set the bar for other airports around the country.
In the US, the FAA runs air traffic control, which sees planes safely onto the tarmac. But responsibility for moving these huge machines around on the ground falls on the airport or airline. Their wingspans, which look so elegant in the air, are just a protruding hazard on the ground. Pilots don’t have great visibility out of the cockpit windows, so they rely on ground controllers to tell them which gate to taxi to, where to hold, which path to take, and to warn them of other vehicles like fueling trucks or passenger busses crossing active taxiways. It’s a complicated dance, becoming ever more so as air travel booms and airports expand, allowing takeoffs and landings with barely 30 seconds between them. Airfields usually have one or more towers, so ground controllers can see everything that happens from the runways to the gates.
The layout of the Fort Lauderdale airport makes it a great test case for something new. One row of gates is hidden from direct view of ground controllers, so they used to send someone on foot to scout the scene, report back, and help them keep track of aircraft on a dry-erase board. Tired of all the back and forth and eager to avoid the cost of building a looming tower, they went the virtual route.
The result is that windowless building, inside which ground controllers take in feeds from 66 CCTV cameras, and FAA radar data that includes each plane’s location and call sign. “We take a lot of information, from lots of sources,” says Betros Wakim, the head of Amadeus Airport Technology in the Americas, which designed the software to stitch all that together and present it to controllers in useful ways.
When a plane is ready to leave its gate, ground controllers first make sure it’s safe to move. With their virtual views, they can train cameras toward the plane, check its flight number, and then check the surrounding area. Pushback can be rather hazardous.
“You always have construction and maintenance people who need to be on the runway to do repairs,” says Patti Clark, aeronautics professor at Embry Riddle University, and a former airport manager. Wild animals might be taking a stroll through the grounds. By combining cameras with the radar data, ramp controllers should be able to spot all that, and ward off disaster. “The human factor is always involved, but the more useful and reliable tools you can provide to the human, the better the situational awareness is,” says Clark.
No surprise then, that Nonnemacher says he has already had phone calls and visits from other airports interested in recreating the system, including Tampa, Dallas, and Toronto.
One day, virtual airfield control could remove ramp control centers from airports altogether, freeing up space for terminals or cargo handling areas. It’s all just data, it can be piped anywhere. There’s precedent in Europe; London City airport has just replaced its air traffic control tower with a remote system, and controllers sitting 120 miles away. That same tech is being used in Australia, Sweden, Norway, and Ireland.
So the next time you come in to land at FLL, don’t bother looking for that non-existent tower. Instead, see if you can spot the little building, with the folks inside making your path to the gate—to freedom—quicker and safer.
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