1.4 KiB
1.4 KiB
"ADS-B Out" add-on for SoftRF-Emu, Stratux, etc...
This repository contains "ADS-B Out" encoder for Tx-capable SDR hardware.
It is currently written is architecture independent Python language and can be used as an add-on for existing open source "ADS-B In" solutions. One known good example is Stratux.
Disclaimer
The source code is published for academic purpose only.
Instructions
- Execute ADSB_Encoder.py script with
<ICAO><Latitude><Longtitude><Altitude>arguments:
$ ADSB_Encoder.py 0xABCDEF 12.34 56.78 9999.0
$ ls Samples.iq8s
Samples.iq8s
$
- Make the raw signal file aligned to 256K buffer size:
$ dd if=Samples.iq8s of=Samples_256K.iq8s bs=4k seek=63
1+0 records in
1+0 records out
4096 bytes (4.1 kB) copied, 0.00110421 s, 3.7 MB/s
$
- Transmit the signal into air:
$ hackrf_transfer -t Samples_256K.iq8s -f 868000000 -s 2000000 -x 10
call hackrf_sample_rate_set(2000000 Hz/2.000 MHz)
call hackrf_baseband_filter_bandwidth_set(1750000 Hz/1.750 MHz)
call hackrf_set_freq(868000000 Hz/868.000 MHz)
Stop with Ctrl-C
0.5 MiB / 1.000 sec = 0.5 MiB/second
User cancel, exiting...
Total time: 1.00038 s
hackrf_stop_tx() done
hackrf_close() done
hackrf_exit() done
fclose(fd) done
exit
$
Validation
$ sudo dump1090 --net --freq 868000000
...
