dkenyser a day ago

Very cool project.

Little bit of trivia regarding the "strange hole near Mexico City"[1] from the README.

This is a 12-kilometer exclusion zone around the highly active Popocatépetl volcano to prevent incidents stemming from volcanic activity.

[1] https://adsb.exposed/?zoom=9&lat=19.1139&lng=261.3813&query=...

madethemcry 19 hours ago

I missed the "About" link in the footer but still found my way to the repo [1], where the project is briefly explained including a ton of great example images. Thanks for that!

> This website (technology demo) allows you to aggregate and visualize massive amounts of air traffic data. The data is hosted in a ClickHouse database and queried on the fly. You can tune the visualizations with custom SQL queries and drill-down from 50 billion records to individual data records.

[1] https://github.com/ClickHouse/adsb.exposed/

lexlambda 21 hours ago

This is certainly missing some kind of legend explaining the colors of the lines, and what data is actually shown.

Is "red" high or low velocity? And as an example, I do not understand what the "Boeing vs. Airbus" selection is trying to represent, as well as how "Altitude & Velocity" are supposed to be displayed at the same time.

Project certainly requires a bit more care if any discussion should happen around it.

  • amiga386 19 hours ago

    Boeing vs Airbus:

        count() AS total,
    sum(desc LIKE 'BOEING%') AS boeing,
    sum(desc LIKE 'AIRBUS%') AS airbus,
    sum(NOT (desc LIKE 'BOEING%' OR desc LIKE 'AIRBUS%')) AS other,

    greatest(1000000 DIV {sampling:UInt32} DIV zoom_factor, total) AS max_total,
    greatest(1000000 DIV {sampling:UInt32} DIV zoom_factor, boeing) AS max_boeing,
    greatest(1000000 DIV {sampling:UInt32} DIV zoom_factor, airbus) AS max_airbus,
    greatest(1000000 DIV {sampling:UInt32} DIV zoom_factor, other) AS max_other,

    pow(total / max_total, 1/5) AS transparency,

    255 * (1 + transparency) / 2 AS alpha,
    pow(boeing, 1/5) * 256 DIV (1 + pow(max_boeing, 1/5)) AS red,
    pow(airbus, 1/5) * 256 DIV (1 + pow(max_airbus, 1/5)) AS green,
    pow(other, 1/5) * 256 DIV (1 + pow(max_other, 1/5)) AS blue

    SELECT round(red)::UInt8, round(green)::UInt8, round(blue)::UInt8, round(alpha)::UInt8
    The redder the pixel, the more Boeing planes there.

    The greener the pixel, the more Airbus planes there.

    The bluer the pixel, the more non-Boeing/Airbus planes there.

    The less transparent the pixel, the more planes in total.

    White means all planes fly there, yellow means Boeing and Airbus dominate, red means Boeing dominates, green means Airbus dominates, cyan means Airbus+others, magenta means Boeing+others, etc.

    • cameronh90 15 hours ago

      Around Heathrow at least, there seem to be a few paths where Airbus and Boeing both fly, but seem to be reporting slightly different offsets within that path.

      I wonder if that's a systemic difference in how they report their GPS position to ADS-B, or an actual real difference caused by slightly different autopilot systems, or something else?

      • dlgeek 9 hours ago

        Could be airlines that have a bias towards one or the other manufacturer, which results in a m'fr bias towards different origin/destination airports.

  • keepamovin 21 hours ago

    I see you highlight that, but I believe the visualization is designed to be intuitive once you interact with it a bit—no legend stricty needed if you calibrate against what you already know.

    Pick a flight you know (maybe one near yer home) and play with the options -- what patterns emerge? Red draws attention, “Boeing vs. Airbus” compares data, while “Altitude & Velocity” combines them. Explore hands-on; discovery often makes insights click better than instructions.

zX41ZdbW 21 hours ago

Thanks for posting!

I've recently added more datasets, "Places", "Birds", "Photos", and "You".

Also, a hint - the rectangular selection tool lets you generate custom reports for a location.

  • bwestergard 19 hours ago

    This is super cool.

    Where is the bird dataset coming from? I assumed ebird at first, but these datapoints don't map on to ebird hotspots...

    Also, where did you get the collection of creative commons licensed bird species photos?

    • zX41ZdbW 15 hours ago

      The main birds dataset is from eBird, and the photos are from Wikipedia.

  • metrix 19 hours ago

    what's going on around colorado springs with these shapes?

    https://adsb.exposed/?dataset=Planes&zoom=9&lat=38.2165&lng=...

    • cluckindan 17 hours ago

      The ”race tracks” are left- and right-hand traffic patterns for arriving aircraft and touch-and-go training, typically used by smaller aircraft. The polylines going from airport to the surroundings are IFR (instrument flight rules) STARs (standard terminal arrival routes) for inbound/outbound planes; each vertex in the line corresponds to a so-called navigation star which usually has a 5-letter name.

    • compass_copium 19 hours ago

      Possibly training flights; they will often do racetrack shapes like that for long periods to maintain proficiency with the aircraft type.

  • etskinner 20 hours ago

    What is "You"? I tried reading the query to understand but couldn't figure it out

    • zX41ZdbW 20 hours ago

      I'd like it if you try to guess :)

      But it is easy to figure it out from the source code. The source code is here: https://github.com/ClickHouse/adsb.exposed/blob/main/index.h...

      • etskinner 19 hours ago

        Apparently my 'easy' isn't the same as yours. There's nothing I could find in the code that describes what it is. You'd have to make a pretty big logic leap to figure it out. All you can see in the code (in config.js, not in index.html) is the dataset url (random string) and the description "this website", which tells you very little.

        For anyone who just wants to skip to the answer, I found it in the pull requests / issues: https://github.com/ClickHouse/adsb.exposed/issues/47

      • dkenyser 20 hours ago

        Interestingly it seems to line up quite well with population density maps.

  • CamperBob2 19 hours ago

    Awesome work, but please consider providing some contrast options. You can't see the country or continent boundaries unless they are full of tracks (or at least I can't.)

cozzyd 21 hours ago

We have a an ADS-B receiver at Summit Station in Greenland which we use to track airplanes that produce RFI we see in our experiment. I've considered sharing data (since nobody else seems to have data there) but the feeding instructions always scare me (run this script that downloads a bunch of random crap as sudo... no thanks).

Please just give me a cURL command I can run... (perhaps some services have that, I haven't looked that hard).

  • toomuchtodo 20 hours ago

    https://airplanes.live/get-started/

    (other sites are corporate or have sold out [adsbexchange], happy to contribute reasonable costs to get a feed, no affiliation, I just like sensor feeds, thank you for the offer and consideration)

    • cozzyd 19 hours ago

      I appreciate the information! And yes, the fact that most sites are corporate makes me really distrustful of running random scripts from them.

      This is sort of an example of what I'm talking about though, this script seems to install a bunch of random stuff but what I really want is an API to incorporate into our own recording process. As far as I can tell from a brief look, this binary (?) is downloaded from somewhere and run: https://github.com/airplanes-live/feed/blob/main/scripts/air... but I just want to incorporate it in the system we're using already when I finally get to improving it from a 10-minute hack job from when I set it up as a side project that ended up being really useful (https://arxiv.org/abs/2506.17522)

      • toomuchtodo 17 hours ago

        I have to dive in a bit more to give good and specific guidance/context, but fundamentally, your system will require a shim to "speak" $UAT_SOURCE and the output this would expect, assuming the source was an sdr. Want help writing the code for this? Specs to build requirements RNO-G in -> SDR out are welcome.

        https://airplanes.live/hardware/

        https://sdr-enthusiasts.gitbook.io/ads-b/ might also be of value.

        • cozzyd 15 hours ago

          yes, we have an SDR running some form of dump1090, then we are parsing json output from that and sticking it in a local sqlite database (we cycle databases once per day). Then that sqlite database eventually gets copied down. There are plans to improve our system to read a bit more directly but on low priority. It looks like these tools expect some format called BEAST that maybe can already be generated by dump1090, and then it's just a TCP stream to some endpoint?

          • rufo 15 hours ago

            Pretty much that. The SDR enthusiast's docker guide the parent comment linked to uses this ultrafeeder container, which has instructions on how to connect directly to dump1090 running on a port. Pairing that[1] plus the rest of the guide instructions should get you a decent ADS-B setup that can feed any of the services you might want - and if you don't want to use the Docker container(s), you should be able to at least use the services and configuration they use as a guide.

            [1]: https://github.com/sdr-enthusiasts/docker-adsb-ultrafeeder/t...

            • cozzyd 15 hours ago

              Can ... I just use socat? It looks like maybe dump1090 already might output data in the right format...

  • jjwiseman 13 hours ago

    It's good to be careful. A popular ADS-B network used to distribute a raspberry pi image that let the maintainers ssh into your machine whenever they wanted.

  • rootusrootus 20 hours ago

    You can get containerized feeders for services like fr24 (e.g. liggy1/fr24feed) but that may not meet your requirements since it's really intended to handle everything from the sdr to the API, not siphon off data you are collecting some other way and then feed it.

    • cozzyd 20 hours ago

      Yeah I definitely don't want to run an opaque container either. We're already collecting and storing the data... I am happy to throw the data over via a udp socket or http request, but I don't want random software that we don't control running...

      • wiedehopf 11 hours ago

        If you're not comfortable running my readsb (fork of dump1090) which is the feed client used by live / lol / fi and some other sites, then you can probably just send them data using socat.

        Most of them will have port 30004 open for their ingest domain, usually feed.domain.com. Thus you'd hook up socat to 127.0.0.1:30005 (i assume you run dump1090 or readsb locally as a decoder). And make socat send that to feed.adsb.lol:30004 and/or feed.airplanes.live:30004

        If you're in a remote location, you don't need to worry about mlat-client as MLAT requires at least 4 receivers that receive common aircraft.

        • mcpherrinm 8 hours ago

          Is there a good documentation (or maybe code) reference to the protocols that get used here? Running readsb is fine enough by me, but I'm just interested in how these systems work. I see some mentions of a Beast format. And then there's the mlat-client too

        • cozzyd 10 hours ago

          Thanks! After doing some more digging I suspected something like this was the simplest solution! Thanks for confirming.

          • cozzyd 8 hours ago

            And to be clear, I'm not necessarily against running readsb I just don't want to run random bash scripts that mess with a running system...

            It looks like readsb is an evolution of dump1090 with potentially more features? I'll look into it when we consider reworking our software. For now I added a quick socat and I'll find out soon if it worked (no planes currently over Summit...). It would be nice if these websites advertised "Start feeding from your running dump1090 instance with socat tcp:localhost:30005 tcp:foo.bar:30004, here is a systemd service that does that."

            edit: it worked! airplanes.live now tracking QTR28V from Seattle to Doha.

            But to conserve bandwidth, it might make sense to send through a compressed ssh tunnel to something not in the middle of the Greenland ice sheet.

      • jonah-archive 18 hours ago

        I had the same concerns awhile back and ending up running a slightly modified version of https://github.com/wiedehopf/mlat-client -- not quite as simple as an http push, but much simpler than a containerized feed client.

        • wiedehopf 11 hours ago

          That's only MLAT though and won't feed the ADS-B data.

  • NoiseBert69 20 hours ago

    ADS-B is easy to receive with an 'rtlsdr' and opensource tools.

    • cozzyd 20 hours ago

      Yeah we are receiving it and dumping it into a sqlite database per day, but we're not sharing it.

paulirish 19 hours ago

Over in r/ADSB, someone recently posted a 3D visualizer of live ADS-B data: https://objectiveunclear.com/airloom.html. A nice alternative to the standard 2D maps we're used to.

  • ctippett 17 hours ago

    Reminds me of the galaxy view in No Man's Sky. Very cool. It's also the type of visualisation I'd imagine would be perfect seen through the lens of a Vision Pro or similar.

blakesterz a day ago

It took me a little while to figure this out, but it's pretty cool. Try the A-380 limit in the examples and it starts making sense pretty quick.

Also, .exposed has been a TLD since 2014? I'm not sure I've seen another .exposed site.

  • zparky a day ago

    float.exposed is fun

ronbenton a day ago

URL makes this sound like it’s supposed to be scandalous

  • keepamovin a day ago

    I know! I think the creator, brilliant as they must be, is not an English native speaker. Or perhaps they simply enjoy the controversy / provocation heh :)

    • ascorbic 19 hours ago

      I think it's just a fun tld with the "adsb" domain available.

    • kevinsundar 19 hours ago

      Eh I think the name kinda works from the perspective that it exposes patterns in adsb data. If you just glanced at adsb maps you wouldn't really see many of these patterns unless you stared at it for a very long time.

      • keepamovin 6 hours ago

        No I think the name works, too. I just understand there's always some people who will see it another way, haha :)

nickysielicki 19 hours ago

I love how you can clearly make out the VFR EAA approach going into Oshkosh from Ripon. It’s only one week out of the year, but there’s so much traffic in that week that it still stands out.

sryNot_ a day ago

Issue with adsb is that very few outside Europe and the US share their signals, so any app will have partial validity, unless you use satellite feeds.

  • Havoc 21 hours ago

    Last I looked at it coverage is pretty good for land globally? Sea less so.

    The bigger issue is that in first world buying a sdr dongle for giggles is viable while in poor countries less so. A raspberry and dongle is a substantial investment if you’re earning 1/20th of a US salary. Don’t think there is an issue with willingness to share data

  • keepamovin a day ago

    How to utilize sat feeds with open data? Across ADS-B track data (like OpenSky Network) South America, Africa and Oceania seem covered in addition to Europe and America, as does East Asia, and India. But China, and some parts of Central Asia and Middle East appear absent?

  • computerfriend 20 hours ago

    I have had no problem accessing ADSB data for various parts of Asia.

swills 15 hours ago

Highlighting an area, I see in the sidebar: Time: 2022-02-01 00:09:20.136 — 2023-12-07 22:46:41.480. Would be nice if it had newer data.

jmux 19 hours ago

this is super cool!

scrozier 19 hours ago

Eschew abbreviations!