[Hackrf-dev] Air relay ADS-B to BTLE via single HACKRF in realtime

[Ilker Temir]

Going slightly off topic but has anyone seen a working implementation of FIS-B with SDR? There are several AIS SDR tools out there but I haven't seen any on FIS-B. It would be awesome to get weather information.

> On Jul 11, 2015, at 11:35 AM, Jason Cooper <hackrf at lakedaemon.net> wrote:
> 
>> On Sun, Jul 12, 2015 at 01:55:12AM +0800, Jiao Xianjun wrote:
>>> On Sun, Jul 12, 2015 at 1:40 AM, Jason Cooper <hackrf at lakedaemon.net> wrote:
>>>> On Sun, Jul 12, 2015 at 01:10:31AM +0800, Jiao Xianjun wrote:
>>>> I write a experimental HACKRF firmware (introduction and download:
>>>> http://sdr-x.github.io/abar ) to let your Phone/Pad "see" air ADS-B info
>>>> via HACKRF:
>>> 
>>> Do you intend to publish the source code?
>> 
>> I am planning. But not now. code is ugly. And not think clearly about risk
>> of potential dangerous usage.
> 
> There are many programmers who enjoy assisting by cleaning up code that
> does something cool.  ;-)
> 
>>>> Because ADS-B and BTLE packet are sparse and rate is low, that's
>>>> why I can have them run in the single MCU of HACKRF and share
>>>> transceiver&antenna in TDD style.
>>>> 
>>>> (To lower risk, latitude and longitude accuracy has been degraded
>>>> intentionally)
>>> 
>>> Risk of what?  Overload MCU?
>> MCU is powerful enough to calculate full resolution. Risk of dangerous
>> usage. After all plane's accurate location will be exposed.
> 
> Ah, I don't think you need to be concerned about that.  At least in the
> US and Europe, this information is published already:
> 
>  http://www.radarbox24.com/  Is an example of one
> 
> The velocity of the plane in combination with the slow update rate of
> ADS-B (once per second) makes using this information alone for targeting
> very unlikely if not impossible.
> 
> Visual targeting is the most likely attack path.  In which case, any
> number of websites or receivers can give notice that a particular plane
> is approaching.  In other words, I don't think your code is changing the
> existing threat model any.
> 
> Ultimately, it's up to you.  I hope you change your mind and release it.
> 
> Now, for some cool thoughts:  AIS for maritime tracking?  FIS-B for
> "It's going to rain in 2 minutes at your location" kind of alerts?
> TIS-B for planes without ADS-B, but picked up on ATC radar?
> 
> thx,
> 
> Jason.
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev