O slideshow foi denunciado.
Utilizamos seu perfil e dados de atividades no LinkedIn para personalizar e exibir anúncios mais relevantes. Altere suas preferências de anúncios quando desejar.

Software Defined Radio

578 visualizações

Publicada em

Learn A Basic to A Bit Advance

Publicada em: Tecnologia
  • Seja o primeiro a comentar

Software Defined Radio

  1. 1. Software Defined Radio null@bangalore
  2. 2. Who am I..? Working On IoT Exploitation Maintainer at Veerababu Penugonda
  3. 3. Agenda..! 1. What is Radio & SDR? 2. Antennas 3. Antenna Types 4. Some Boring Topics 5. Listening FM (Demo) 6. Flight Tracing (Demo) 7. Q&A
  4. 4. What is a Radio ..? Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.(Wikipedia)
  5. 5. What is SDR ..? Radio communication system where components that have been typically implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system.(Wikipedia)
  6. 6. SDR: Features: VHF :174928~ 239200 KHZ Receiving frequency: FM radio: 87.5~108 MHZ DAB radio: L-Band-1452960~1490624 KHZ Cost : Approx $24
  7. 7. Some other gadgets: SDR Play -- Airspy R2 -- HackRF One -- bladeRF -- SDR -- $149 $199 $300 $420 $24 But A bit Costly × × × × √
  8. 8. Airspy HackRF bladeRF SDR Play
  9. 9. Antennas? An antenna , or aerial, is an electrical device which converts electric power into radio waves, and vice versa.It is usually used with a radio transmitter or radio receiver. (wikipedia)
  10. 10. Types of antennas..! 1. Wire Antennas 2. Travelling Wave Antennas 3. Reflector Antennas 4. Microstrip Antennas 5. Log-Periodic Antennas 6. Aperture Antennas
  11. 11. Types of antennas..!
  12. 12. Radio Waves :
  13. 13. A Bit Boring Math: Wavelength (λ) = Speed of light (c) / Frequency (f) for light wave: for any wave: Wavelength (λ) = Wave speed (v) / Frequency (f)
  14. 14. λ = 7. m
  15. 15. Listening FM.. What we need..? 1.Laptop 2.SDR 3.GQRX software (sudo apt-get install gqrx -linux)
  16. 16. What is FM..! Frequency modulation
  17. 17. Demo Time Lets Get Some Frequencies
  18. 18. Tracing Flights using SDR Requirements..? 1. Laptop (optional) 2. Dump 1090 (https://launchpad.net/~roman-moravcik/+archive/ubuntu/gnuradio) 3. Internet + Browser
  19. 19. Dump 1090 .. What it is..? - Dump1090 is a program which accesses ADS-B data. - Plane Plotter ADS-B: - Automatic dependent surveillance – broadcast
  20. 20. Demo Time : dump1090 --interactive --net --net-beast --net-ro-port 31001 --interactive Interactive mode refreshing data on screen --net Enable networking --net-beast TCP raw output in Beast binary format --net-ro-port <port> TCP raw output listen port (ex:31001)
  21. 21. Trace Ships: Tracing ships all over world so guys Follow the Link https://www.vesselfinder.com/
  22. 22. Some additional info: Is this crime..? Is that IoT gadget..? Transmission is possible..? SDR Exploitation is possible..? Transmission prohibited Yes Yes Yes
  23. 23. References..! http://www.antenna-theory.com/antennas/main.php http://www.rtl-sdr.com/ http://gnuradio.org/ http://gqrx.dk/
  24. 24. Q&A

×