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Thomas Watson
@wa7son
github.com/watson
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@wa7son
@wa7son
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Getting Data From The Sky
@wa7son
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@wa7son
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@wa7son
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@wa7son
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@wa7son
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ADS-B
@wa7son
Automatic Dependent Surveillance – Broadcast
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@wa7son
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@wa7son
8 bit
control
24 bit
A/C address
24 bit
parity
Mode S Acquisition Squitter
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@wa7son
8 bit
control
24 bit
A/C address
24 bit
parity
56 bit
ADS message
Mode S Extended Squitter (1090 MHz)
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Pulse-Position Modulation
@wa7son
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Pulse-Position Modulation
@wa7son
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Pulse-Position Modulation
@wa7son
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Access Granted
@wa7son
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@wa7son
RTL2832U chip
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Demo
@wa7son
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@wa7son
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Resources
github.com / watson / rtl-sdr
github.com / watson / mode-s-decoder
(github.com / watson / planespotter)
greatscottgadgets.com / sdr
@wa7son
@wa7son
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@wa7son
github.com/watson
Merci