ARLA/CLUSTER: Como utilizar os SDR para escutar comunicações aeronáuticas.

[João Costa > CT1FBF]

Video of VK2FUNK SDR talk at DEF CON 25

Balint Seeber VK2FUNK gave a presentation 'Hacking the Wireless World:
Software Defined Radio Exploits' at the DEF CON 25 event in Las Vegas

Three interesting applications will be demonstrated, and their
underlying theory and design explained. The audience will be exposed
to some novel GNU Radio tips and DSP tricks. INMARSAT Aero will be
revisited to show (in Google Earth) spatial information, such as
waypoints and flight plans, that are transmitted from airline ground
operations to airborne flights. A good chunk of the VHF band is used
for airline communications; plane spotters enjoy listening to tower
and cockpit communications.

Modern SDRs can now sample the entire band, and as AM modulation is
used, it's possible to use a counterintuitive, but simple, demodulator
chain (first shown by Kevin Reid's wideband 'un-selective AM'
receiver) to listen to the most powerful transmission. This will be
demonstrated with a GNU Radio-based implementation. It is also
possible to 'spatialise' the audio for the listener using stereo
separation, which can convey a transmission's relative position on the
spectrum.

FMCW RADAR experiments are enhanced to include Doppler processing.
Plotting this new velocity information, due to the Doppler effect,
shows whether a target is heading toward or away from you, and often
reveals targets not normally seen in range-only information - this
demonstrates the true power of full RADAR signal processing. This
technique will be applied to the live audio demo, a new live SDR demo,
CODAR ocean current tracking, and passive RADAR exploiting powerful
ATSC digital television signals (this was used to track aircraft on
approach across the Bay Area).

Watch DEF CON 25 Wifi Village - Balint Seeber - Hacking Some More of
the Wireless World
https://youtu.be/psuEzxFJnZY


DEF CON 25
https://www.defcon.org/html/defcon-25/dc-25-index.html