Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)
-
Upload
bert-jan-schrijver -
Category
Internet
-
view
242 -
download
2
Transcript of Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)
![Page 1: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/1.jpg)
Decoding the airspace above you
with Java and $7 hardware
Bert Jan Schrijver [email protected]
@bjschrijver
![Page 2: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/2.jpg)
How it all started…
@bjschrijver
![Page 3: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/3.jpg)
Software Defined Radio• Radio communication system • Components implemented in software
@bjschrijver
![Page 4: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/4.jpg)
Software Defined Radio• Cheap DVB-T with RTL2832U chip ($7) • Hence: RTL-SDR • Details on www.rtl-sdr.com
@bjschrijver
![Page 5: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/5.jpg)
@bjschrijver
Amateur radio
![Page 6: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/6.jpg)
@bjschrijver
Wireless mic
![Page 7: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/7.jpg)
Java and RTL-SDR• RTL_TCP: Provides socket for RTL-SDR
device • Java can connect, set frequency and
stream data • Decode data signal in Java
@bjschrijver
![Page 8: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/8.jpg)
ADS-B• Automatic Dependent Surveillance
Broadcast • Monitoring and collision avoidance • Installed on all airliners • Reports identity, position and more • Part of US and EU regulation
@bjschrijver
![Page 9: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/9.jpg)
ADS-B
@bjschrijver
Source: simflight.nl
![Page 10: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/10.jpg)
Java and ADS-B• Java connects to RTL_TCP socket • But now what? • No open source Java decoders
available
@bjschrijver
![Page 11: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/11.jpg)
Java and ADS-B• So what are our options? • Use C implementation • Write own decoder • …
@bjschrijver
![Page 12: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/12.jpg)
How stuff works
@bjschrijver
![Page 13: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/13.jpg)
Mini-demo
@bjschrijver
![Page 14: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/14.jpg)
That’s cool, but…• In-house reception is sub-optimal • Always-on service would be nice • Laptop needed for work now and then
@bjschrijver
![Page 15: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/15.jpg)
Getting serious
@bjschrijver
![Page 16: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/16.jpg)
Antenna range
@bjschrijver
![Page 17: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/17.jpg)
8 hours of flight data
@bjschrijver
![Page 18: Devoxx 2014: Decoding the airspace above you with Java and $7 hardware (ignite talk)](https://reader033.fdocuments.us/reader033/viewer/2022042716/55c10e1abb61eb4b348b47cc/html5/thumbnails/18.jpg)
16 hours
@bjschrijver