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

131–140 of 160 posts

Re: Flightradar24 – how it works

#131

Post by MarcysVonEylau »

RivieraKid wrote: post #22

Not a big fan of "data monopolies" like Flightradar24. It's as if OpenStreetMaps was a private company that capitalizes on being first into the space and having a community of contributors willing to supply data to a private company for free. I hope an open data project such as https://www.adsbexchange.com/ wins in the long-term.

You are always welcome to feed more than one service. Even when you get a free receiver from the company, nothing stops you from repurposing the data and feeding elsewhere.

Re: Flightradar24 – how it works

#132

Post by LancerSykera »

MarcysVonEylau wrote: post #130

It's worth pointing out that you can get a free ADS-B receiver from sites like Flightradar24 or Flightaware. The hardware is often proprietary, but they must allow you to re-purpouse the data received by the antenna (it's public domain).

The article goes over this.

Re: Flightradar24 – how it works

#133

Post by MarcysVonEylau »

tyingq wrote: post #45

Here's someone spoofing a fake aircraft this way: https://www.ainonline.com/aviation-news/air-transport/2012-0...

That presentation is something that interested me in ADS-B in the first place. Not because I want to spoof airplanes, but because of novelty of this project.

Re: Flightradar24 – how it works

#134

Post by citruspi »

lesmond wrote: post #113
mswd wrote: post #62

There's also https://planefinder.net

Thank you! Lee (CTO @ Plane Finder)

Hey Lee,

Just took a look at your website, I was looking for some kind of historical flight data provider.

Clicked on the "Historical Flight Data" link and it just links to a couple popular flights which in turn link to pages with a few pieces of flight data visualized/available.

Clicked on the "Commercial Services" link and it details a few commercial services including "Historical Flight Data" which says

> Looking for historical flight data? Plane Finder historical flight data is available in 5 minute or 1 minute intervals dating back to 2011 and is delivered as flat files in CSV format.

"Historical Flight Data" isn't clickable, and I don't want to fill out a form ("Contact Us"), so I click on "View Products" which just links me to your downloadable apps.

Apologies if there's something I'm missing.

I'm trying to get a look at API docs and pricing, and sign up and get started without having to "contact your team."

Re: Flightradar24 – how it works

#135

Post by heavenlyblue »

tialaramex wrote: post #74
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 we are not "picking up" the car. The car is still there for its owner. We only recorded the presence of the car (radio transmission) for our own purposes and it is unmolested.

Nah - you're specifically using technology that allows you to set any frequency you want, but instead, you're picking the frequency that is illegal for you to listen to and then you're recording it.

Moreover - when you finally get caught, on which scale do you have to be doing it to get caught in the first place? Remember - laws don't exist outside reality.

And let's be honest - the recording of the presence of a car is also quite illegal in certain jurisdictions. e.g. Germany.

Re: Flightradar24 – how it works

#136

Post by codedokode »

RivieraKid wrote: post #22

Not a big fan of "data monopolies" like Flightradar24. It's as if OpenStreetMaps was a private company that capitalizes on being first into the space and having a community of contributors willing to supply data to a private company for free. I hope an open data project such as https://www.adsbexchange.com/ wins in the long-term.

Also, Flightradar hides some of the data from public view [1].

[1] https://www.flightradar24.com/business/aircraft-unblocking

Re: Flightradar24 – how it works

#137

Post by gruturo »

rootusrootus wrote: post #18
a2tech wrote: post #2

Interesting tidbit from the article—apparently flightradar24 doesn’t show business jets or military planes.

I can confirm it does not show the F15s that routinely fly over my house. But I see business jets all the time, no problem.

Those may be running with their transponder off?

Re: Flightradar24 – how it works

#139

Post by trishmapow2 »

pard68 wrote: post #80
ronsor wrote: post #69

Earlier quoted context omitted.

Buy the kit from rtl-sdr.com -- no need to use ebay and they are the best option for a beginner

Thanks! Bought one for myself and a second for my Ham radio enthusiast father.

Consider also an FM band-stop filter and an LNA, apparently makes things so much better. Even with the antenna removed I can still hear FM broadcast, ruins the whole band. I've just ordered those two, want to test it with NOAA reception.

Re: Flightradar24 – how it works

#140

Post by phkahler »

_-___________-_ wrote: post #63
phkahler wrote: post #50

Is there a simple solution to get a basic offline map (OSM maybe) and use a pi without internet as a radar display at my local non-towered airport?

Yes. A cheap DVB-T dongle supported by RTL-SDR along with https://github.com/MalcolmRobb/dump1090 or similar will allow this, but bear in mind that something like this should really not be used in any situation where flight safety depends on it.

That uses a google map which is nice, but I'd prefer something offline.
Post reply on HN