After going through the tutorial and landing a few planes, my first impression is the interface is extremely user hostile... I hope real ATC is better.
For the very limited vocabulary used in vectoring aircraft, the voice recognition part might not be horribly difficult (since it knows what it's expecting.)
Since I played "Kennedy Approach" on the C64 I dream of such a voice recognition ATC simulator.
I have planned to program my own with such a limited vocabulary since more than 10 years. Well, in my next live then.
You can outsource the voice recognition. Windows[1] and Mac OS[2] both seem to include speeech recognition APIs these days, and of course, what with it being 2014, there are online APIs[3] and forthcoming browser support[4]. All of them appear to support limited command grammars, which is perfect for this sort of simulation.
The general speech recognition engines from Nuance, Google, etc. might have difficulty with the specialized language. There are corpora available of transcribed radio communications with ATC, e.g. https://catalog.ldc.upenn.edu/LDC94S14A and http://cvsp.cs.ntua.gr/projects/pub/HIWIRE/WebHome/HIWIRE_db... You could use the corpora to train an acoustic model and language model for the Sphinx or Pocketsphinx open source speech recognizers.
The reason I was looking into doing such a thing is that the NASA Airspace Operations Challenge[1] (now canceled) included as part of the competition the ability for drones to take verbal commands from ATC in case the communications links with their controllers were lost. The U.S. military has also been interested in giving drones this capability.
Interestingly real ATC radio comms has a nasty security problem as well: no authentication. As a broadcast medium, anyone can hop on the frequency and pretend to be ATC or a plane. No way to know who is the real one. You can take out your handheld radio right now and pretend to be JFK Tower or SF Approach.
Pilots are really good at pretending to be ATC because of training to handle CTAF MULTICOM UNICOM all of which is basically the same idea despite some paperwork differences. I guess CTAF is what it is, and the COMs are individual technical implementations. Its been a long time since student pilot days and I remember UNICOM had flight service stations and I don't think MULTICOM allows FSS chatter about fuel prices and car rentals or whatever on freq.
I live nearby and did student pilot training at an airport that doesn't have ATC staffing over 3rd shift. There was only perhaps one landing per hour overnight, so they don't staff the tower. Pilots just kinda broadcast off into space, listen to each other, and talk to each other.
I guess you'd describe it as a quiet party line rather than the formal meeting of staffed ATC communications.
Contrary to popular belief pilots listen constantly to each other and will get sorta-complaints from the tower if they haven't been paying attention to other pilots... Cessna 1234 do you have Cessna 6789 traffic in sight to your SW? And if you haven't been paying attention to the conversation between ATC and 6789 such that you don't know 6789 exists or is to your SW, then ATC is going to be kinda sorta pissed. This is why you can't replace ATC with a cellphone, at least not practically.
Another popular, weird, belief is ATC is like radio control and shutting down radio control makes all the planes fall out of the sky. Without the "meeting coordinator / committee chairperson" effect of the ATC, everything will happen in agonizing slow motion with massive distraction, but it'll all happen perfectly well. The reason ATC exists is it saves the pilots time, lets them focus on flying the plane a little more than focusing on commo with every other plane in the area. Its the cognitive difference between a hub-spoke topology and a full mesh. At 2am when there's only 0, 1, or 2 planes up in the airspace over the field, there's not much difference.
ATC does occasionally fail and there are procedures for load sharing.
One interesting EE problem is good luck talking over a 500 watt ATC tower at the field, from a couple miles away and 1 watt handheld. Just saying. Sure you can piss a lot of people off, but complete and utter long term takeover is going to be rather non-trivial. And there are a huge number of planes and sites with DF gear for tracking the old fashioned emergency beacons, so of all the things to jam, aircraft freqs are probably the one freq band likeliest to result in your demise ... You'll live a lot longer jamming the FM radio band or CB or the cops. Maybe not long, but longer.
My guess is that application does actually use a custom language model to get that level of accuracy. As far as I know, Nuance doesn't offer any SDK or API that lets you specify your own language model; They just offer various applications with hardcoded language models.
Some things I noticed.. There's no need for mouse, just keep on writing commands. It is also possible to use shortcuts and enter multiple commands at once. For example "ba577 c 5 t 270 takeoff".
Same here. Safari 8.0.2 on Yosemite 10.10.2. It worked in Firefox though, but unfortunately didn't make me any good at the game. I couldn't get ILS. Maybe I didn't understand the landing part.
It looks like it works best when you point the plane in the right direction at 5000 feet, then have them fix on the named point in front of the runway in question, and tell them to land. Waiting until they're on the runway-skewers is too late.
OK I know it's a simulation, but as a pilot, this really helps understand what ATC is going through. If I was a flight instructor, I'd recommend my students spend some time with this.
Needs better error correction when it comes to landing I haven't been able to land one yet I get it close to the lines but no cigar. I've resorted to just trying to get them to collide.
Its fun, The two speeds are at the extremes though, Maybe a third halfway between them.
Runway names are impossible to see while landing a plane and it's not obvious that takeoff always happen on *R runways.
If it was expanded it use actual flight data (if its legal) it would be something I could see myself losing a lot of time to it.
Woah this is super fun and nothing was wrong with it. It was kind of annoying but I feel like all sims are that way. I want to be able to run different airports!!!! And a mode that just goes on forever would be awesome.
It'd be great to have the option to turn on/off radio chatter, the sort you hear when listening to real ATC transmissions. Would definitely make the experience feel a bit more immersive.
It's because your comment didn't really add anything to the conversation. I didn't down vote you by the way, but HN frowns on such comments.
In this instance though, when someone is showing the community their work, I feel it's a bit unfair to expect everyone who comments to have detailed and constructive feedback. Some people just want to say "awesome!" and I suspect the people submitting their work also want to hear that. Alas, it's a shortcoming. Perhaps up votes are the way to say "awesome".
This is a lot of fun. I've always been a huge fan of flight sims, but I never realized that ATC was just as much fun.
Just a few notes:
* All the planes enter at 90 degree angles. I assume this is intentional, but it would be nice to have semi-random entry angles.
* There are a fixed number of planes in the simulation. It would be more challenging and fun if more planes would arrive while I'm taking care of the others.
* The words are small and hard to read.
All in all I think this is a really cool simulation. I can see myself wasting many more hours on it. Thanks!
It's funny you mention BVA. I joined them many years ago (before FSX closed gamespy) and I flew with them quite a bit. I think I was just a little intimidated by how professional they were. I did a few of their lessons, and then I went back to free flight in the offline sim where I could take off the from the taxi ways :).
I flew virtually with real life general aviation pilots, some of them assuming the role of the ATC in the sim; or else players would proceed like with uncontrolled airstrips in real life: announcing take-offs, landings, etc. on the "frequency" (a channel on a teamspeak server, one for each airport).
For someone like me who is has never flown a plane, it added kind of an RPG aspect to the simulation.
I used to work on quite a large Flight Sim website a few years back and a lot of our users would do this.
It gets interesting when you have 20+ people in an area because people do not fly as perfectly as shown in any ATC simulator.
This is great. After a few minutes of being frantically overwhelmed I gradually figured things out. Cool to see what ATC has to deal with, I was always curious how that looked.
There are two things I'd like to see:
- More than two speed options. A slider, if possible?
- Some sort of simple scripting. I'd like to be able to dial in, "Navigate to WAYPOINT, then when you reach that, navigate to OTHER WAYPOINT, then descend to 5000 feet, then land on runway XX."
Waypoint scripting would be counter to how ATC works. The challenge is remembering your plan for each plane and mentally queuing up the instructions you need to give to pilots.
Except that real ATC can indeed give instructions of that sort. It's not so common for terminal environments to give really long clearances during approach because the pilots may not be ready to copy them down right away, but instructions like 'fly direct WAYPOINT, cross WAYPOINT at or above 5000 then descend at pilot's discretion to 2500' are common enough a bit further out.
I've found a new way to make airports handle twice as many departures per hour: send a plane to each end and tell them to take off at the same time! So far: 0 crashes!
It's the counter-intuitive out-of-the-box thinking that I come to HN for!
Some indication of when aircraft are risking violation of separation would be handy, I assume that real ATC consoles have this? Its unclear what the scale is.
Voices would be great. Emergencies (minimal fuel, medical, etc) and weather would also be great!
86 comments
[ 2.9 ms ] story [ 155 ms ] thread[1]: https://en.wikipedia.org/wiki/Microsoft_Speech_API [2]: https://developer.apple.com/library/mac/documentation/Cocoa/... [3]: http://api.ai [4]: http://www.smashingmagazine.com/2014/12/05/enhancing-ux-with...
http://www.justflight.com/product/tower-2011-single-player-e...
1. http://www.uasaoc.org/
Pilots are really good at pretending to be ATC because of training to handle CTAF MULTICOM UNICOM all of which is basically the same idea despite some paperwork differences. I guess CTAF is what it is, and the COMs are individual technical implementations. Its been a long time since student pilot days and I remember UNICOM had flight service stations and I don't think MULTICOM allows FSS chatter about fuel prices and car rentals or whatever on freq.
I live nearby and did student pilot training at an airport that doesn't have ATC staffing over 3rd shift. There was only perhaps one landing per hour overnight, so they don't staff the tower. Pilots just kinda broadcast off into space, listen to each other, and talk to each other.
I guess you'd describe it as a quiet party line rather than the formal meeting of staffed ATC communications.
Contrary to popular belief pilots listen constantly to each other and will get sorta-complaints from the tower if they haven't been paying attention to other pilots... Cessna 1234 do you have Cessna 6789 traffic in sight to your SW? And if you haven't been paying attention to the conversation between ATC and 6789 such that you don't know 6789 exists or is to your SW, then ATC is going to be kinda sorta pissed. This is why you can't replace ATC with a cellphone, at least not practically.
Another popular, weird, belief is ATC is like radio control and shutting down radio control makes all the planes fall out of the sky. Without the "meeting coordinator / committee chairperson" effect of the ATC, everything will happen in agonizing slow motion with massive distraction, but it'll all happen perfectly well. The reason ATC exists is it saves the pilots time, lets them focus on flying the plane a little more than focusing on commo with every other plane in the area. Its the cognitive difference between a hub-spoke topology and a full mesh. At 2am when there's only 0, 1, or 2 planes up in the airspace over the field, there's not much difference.
ATC does occasionally fail and there are procedures for load sharing.
One interesting EE problem is good luck talking over a 500 watt ATC tower at the field, from a couple miles away and 1 watt handheld. Just saying. Sure you can piss a lot of people off, but complete and utter long term takeover is going to be rather non-trivial. And there are a huge number of planes and sites with DF gear for tracking the old fashioned emergency beacons, so of all the things to jam, aircraft freqs are probably the one freq band likeliest to result in your demise ... You'll live a lot longer jamming the FM radio band or CB or the cops. Maybe not long, but longer.
Speaking out of experience, yes. 1kW sorta-portable system on a hill in a car, no problems even after half an hour of running a pirate station.
http://en.wikipedia.org/wiki/%C3%9Cberlingen_mid-air_collisi... http://en.wikipedia.org/wiki/Vitaly_Kaloyev
In all it's simplicity this is really great.
If it was expanded it use actual flight data (if its legal) it would be something I could see myself losing a lot of time to it.
It'd be great to have the option to turn on/off radio chatter, the sort you hear when listening to real ATC transmissions. Would definitely make the experience feel a bit more immersive.
In this instance though, when someone is showing the community their work, I feel it's a bit unfair to expect everyone who comments to have detailed and constructive feedback. Some people just want to say "awesome!" and I suspect the people submitting their work also want to hear that. Alas, it's a shortcoming. Perhaps up votes are the way to say "awesome".
* All the planes enter at 90 degree angles. I assume this is intentional, but it would be nice to have semi-random entry angles.
* There are a fixed number of planes in the simulation. It would be more challenging and fun if more planes would arrive while I'm taking care of the others.
* The words are small and hard to read.
All in all I think this is a really cool simulation. I can see myself wasting many more hours on it. Thanks!
http://www.bostonvirtualatc.com/ and others allow you to work as a controller for a virtual airspace populated by human "pilots."
For someone like me who is has never flown a plane, it added kind of an RPG aspect to the simulation.
There are two things I'd like to see:
- More than two speed options. A slider, if possible?
- Some sort of simple scripting. I'd like to be able to dial in, "Navigate to WAYPOINT, then when you reach that, navigate to OTHER WAYPOINT, then descend to 5000 feet, then land on runway XX."
It's the counter-intuitive out-of-the-box thinking that I come to HN for!
Sorry.
http://www.northkoreatech.org/2014/08/01/whos-using-north-ko...
Voices would be great. Emergencies (minimal fuel, medical, etc) and weather would also be great!