Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Flightradar24 – how it works

habr.com

Post reply on HN
Print view View original

111–120 of 160 posts

Re: Flightradar24 – how it works

#111

Post by aw3c2 »

coin wrote: post #11
aw3c2 wrote: post #7

Is there a site that offers truly open data, as in a download of all their collected historic data under a open license and without other restrictions (like having to query an API)?

Adsbexchange.com

Not open data :(

> for non-commercial use, all of this data is freely accessible to anyone!

> Any commercial users are required to license the data from ADSBexchange, contact here for terms.

Commercial use is a thing very hard to define so I avoid that even for personal projects (which could be consider advertisements for my commercial offers).

Re: Flightradar24 – how it works

#112

Post by vsl »

diggan wrote: post #5

Worth nothing that if you're in a area with poor coverage, Flightradar24 might be willing to send you a free receiver https://www.flightradar24.com/add-coverage Page above also have a similar guide to this submission. I mainly started contributing with data only because you'll be able to get a free business account with Flightradar24 if you contribute, which gives you longer history to view, and bunch of more map lay…

Article did note, at length.

Re: Flightradar24 – how it works

#114

Post by omegant »

sorenjan wrote: post #38
omegant wrote: post #24

They surely get data from other sources too. You can track planes flying across the ocean, where they get that data from?

Satellites, radar, interpolation up to 120 minutes, and receivers on islands. https://www.flightradar24.com/blog/the-evolution-of-flightra... https://www.flightradar24.com/blog/over-the-ocean-24-hours-o... https://www.flightradar24.com/blog/tracking-flights-with-sat...

Thanks!

Re: Flightradar24 – how it works

#115

Post by fires »

samstave wrote: post #17

You know what would be a fun experiment with this: Would be to specifially watch all the planes that fly in and out of a large notable event; such as the superbowl, or davos, g-20 summit etc - and see where all thise private jets come from to get to that event...

People are definitely doing this, also codified in this paper: http://www.cs.ox.ac.uk/files/9919/eurosnp.pdf (Inferring Confidential Corporate Mergers and Government Relations from Air Traffic Communication)

Re: Flightradar24 – how it works

#116

Post by izacus »

upofadown wrote: post #73
heavenlyblue wrote: post #70

Earlier quoted context omitted.

Someone putting a car in the middle of nowhere doesn’t leave it there for anyone ti pickup.

But it is pretty OK to look at the license plate...

Is it also OK for that license plate to be shown to the world together with its location and time?

Re: Flightradar24 – how it works

#117

Post by black-tea »

Rebelgecko wrote: post #92
bicubic wrote: post #78

Earlier quoted context omitted.

How is the data coverage compared to flightradar?

Last time I looked closely it was similar in North America and Europe. Asia, Africa, and over the oceans had some pretty big gaps. There's also no delay on the data, although I think Flightradar and Flightaware dropped the 5 minute delay they used to have. Flightradar censors a lot of corporate jets and military/law enforcement aircraft but I don't think Opensky does. In fact one of either Opensky or adsbexchange eve…

> Flightradar censors a lot of corporate jets and military/law enforcement aircraft

Yes, this is disappointing. In the past I had seen military planes on there. I even saw fighters practising dogfighting over the North Sea. But more recently I've seen interesting aircraft fly over, such as large four-engine planes at altitude outside of normal commercial flight paths, but they just don't appear on flightradar. It's stupid because I can see the damn thing. I need to figure out an alternative to flightradar, it seems.

Re: Flightradar24 – how it works

#119

Post by cpv »

wetpaws wrote: post #75

Glad to see english version of the habr slowly getting traction.

Good improvement on them. They had interesting articles from time to time, from various domains (security, gamedev, DYI, management, work-life balance, work migration, science, etc). Opening to the international audience can only be beneficial for them, and the audience.

Re: Flightradar24 – how it works

#120

Post by alkonaut »

speeq wrote: post #90
alkonaut wrote: post #86

Earlier quoted context omitted.

Interesting. So how does that work in FR24? If there was a service to get this data over long distances, then all these short range receivers would be unnecessary. So something is missing in “how does FR24 work” when it comes to that data.

Probably satellite ADS-B receivers like from: https://en.wikipedia.org/wiki/Aireon

If that's what happens - does that mean that suddenly FR24 won't need all this data crowdsourcing?
Post reply on HN