12 Dec
2012
12 Dec
'12
3:52 a.m.
On 12/10/2012 07:41 PM, keenerd wrote:
Most significant is rtl_adsb, a fast and simple ADS-B
decoder. It is
not the most sensitive decoder (Prog's and rtl-1090 pick up a few more
planes) but it works fairly well. Of course it lacks the interactive
maps of other software, however the output can be piped into fancier
programs or across the network with netcat. To use it, just run
"rtl_adsb". It does not need any options and can pick up plenty of
signals with only the stock antenna.
Hi Keenerd & all, I'm doing some tests with ADS-B (i'm a newbie in this
field so please be gentle) and am being able to receive messages like these:
DF=11 CA=5
ICAO Address=acc3b4
PI=0x94804c
Type Code=13 S.Type/Ant.=1
----------
DF=11 CA=5
ICAO Address=aad3b4
PI=0x024745
Type Code=13 S.Type/Ant.=1
----------
DF=15 CA=6
ICAO Address=a8d3b4
PI=0xa22339
Type Code=4 S.Type/Ant.=0
----------
DF=11 CA=5
ICAO Address=a8d3b4
PI=0x3721a3
Type Code=b S.Type/Ant.=0
----------
DF=11 CA=5
ICAO Address=a8d3b4
PI=0x2d3400
Type Code=b S.Type/Ant.=0
----------
DF=11 CA=5
ICAO Address=a8d3b4
PI=0xbec907
Type Code=b S.Type/Ant.=0
I've been reading a little about the frame format from here
http://www.radartutorial.eu/13.ssr/sr25.en.html (any other better
source?). I don't know yet very well what's the meaning of DF=11, 10 or
15 but almost all of the messages have a value of 11.
A couple of doubts:
1) from the output shown above, it seems that for some reason I'm not
receiving the complete ADS-B 'data' frames, am I right? where's the
altitude, latitude, etc? why that information is not displayed?
2) Is it possible to redirect the output to virtualradarserver? I tried
to redirect it as it's suggested above (rtl_adbs -R | nc....), the
status is 'Connected' and 'Total messages' was around 150 but
'Aircraft
tracked' was 0 and nothing shown in the map. Should it work? do I need
to use -R in rtl_adsb? in virtualradarserver the 'Data source' is set to
'basestations', is that right? should I try other software?
Thanks in advance for any help/tips :)
LU