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TOPIC: [NEW] Feeding FLARM data to OpenSky

[NEW] Feeding FLARM data to OpenSky 5 months 4 weeks ago #836

Dear members,

As you know, our main goal is to collect ADS-B and Mode-S data for research purposes. On top of that we are now collecting FLARM messages. For this purpose we use the existing receiver software of the OGN Project. If you already have an OGN receiver setup, then it is really easy to share your FLARM data with us. If not, then you would need to setup an OGN receiver first, as explained here.

If you are willing to share your data with us, FLARM aircrafts received by your station will appear on the OpenSky Explorer and we will store the (raw) messages that your station receives and they will be available to our research community in our Historical Database. Furthermore we are working on a “collaborative decoding” functionality that should enable us to reconstruct messages with a poor SNR that have been received by multiple sensors: this could be especially helpful to track down devices that disappear in areas that are at the edge of the usual coverage.

Feeding with us with your existing OGN receiver is really easy, for simplicity I made a script that sets up everything for you and that you can run by running the following command from the home directory of the RaspberryPi:

sudo bash -c "$( wget -O - gist.githubusercontent.com/giorgix3/6ba6...dff/OpenSky-flarm.sh)"

If you prefer to make the changes yourself, these are the necessary steps:

1) Replace ogn-decode with the last version by running cd rtlsdr-ogn; wget -O ogn-decode fvvsi.ch/o/ogn-decode; sudo chmod +x ogn-decode
2) Add the following code to the config file “.conf"

Demodulator:
{ MergeServer = "flarm-collector.opensky-network.org:20002"; } ;

3) Restart the service: sudo service rtlsdr-ogn restart

If you are using a “Ready to use” Image by Sébastien Chaumontet, you just need to change the OGN-receiver.conf file in your /boot partition as follows:

ReceiverName="MyReceiverName\";}; Demodulator:{ MergeServer = \"flarm-collector.opensky-network.org:20002"
runAtBoot="/usr/bin/wget fvvsi.ch/o/ogn-decode --quiet -O /home/pi/rtlsdr-ogn/ogn-decode ; chmod +x /home/pi/rtlsdr-ogn/ogn-decode"

Don’t hesitate to contact me if you have any questions. Thank you in advance for your help!

Giorgio
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Last Edit: 4 weeks 1 day ago by giorgix3.
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[NEW] Feeding FLARM data to OpenSky 4 weeks 2 days ago #1007

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unabbreviated link (for easy copy & paste):
sudo bash -c "$( wget -O - https://gist.githubusercontent.com/giorgix3/6ba6271a3304ab975ea18897e4938dbd/raw/8aafaaaa7a63e1699d868cae49bb177f19af6dff/OpenSky-flarm.sh)"

Is it possible to check if the feeder is working? Ideally without any FLARM aircraft/glider in sight?

Thx
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[NEW] Feeding FLARM data to OpenSky 4 weeks 1 day ago #1008

Hi,

at the moment there is no way for you to see if you are seeding correctly as we are still in a beta stage. However, feel free to hit me up and I will be able to check manually.

Best,

G
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[NEW] Feeding FLARM data to OpenSky 4 weeks 5 hours ago #1009

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Thanks. I am using a Pi Zero W and the image of Sébastien Chaumontet (could not get OGN to work with Raspbian Stretch Lite and manual install)

My local raspi status page (8081) states
Demodulator.MergerServer flarm-collector.opensky-network.org:20002
and my DNS server shows requests for flarm-collector.opensky-network.org . Looks fine and I can see a FLARM data from a REGA helicopter near me on the live map.
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[NEW] Feeding FLARM data to OpenSky 3 days 7 hours ago #1022

I would like to feed OGN data as well, but there is a problem to solve.
I am running a local "Virtual Radar Server" to visualize AC from ADS-B data.
VRS is getting data
- from dump1090-fa ( ADS-B )
- from PilotAware-OGN
PW-OGN converts AC positions from ogn-decode into BaseStation messages.
And here is the problem:
With MergeServer enabled, ogn-decode 0.2.6 frequently crashes, while
ogn-decode 0.2.7 (your version) is running stable, but PW-OGN is reporting
AC positions several thousand km off.

Any idea how to solve this? I am not sticking to PW-OGN is there is another program
converting ogn-decode supplied positions to a format VRS can handle.
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[NEW] Feeding FLARM data to OpenSky 1 day 23 hours ago #1023

Hi,

It is known that the merge server option does not work very well on 0.2.6. I believe that 0.2.7 has a slightly different "text" output format (
telnet localhost 50001
) than the previous version. I assume that the parser that Pilot Aware uses to get the data from OGN-decode does not interpret the data correctly.

I will try to bring up the issue on the Pilot Aware forum.

Best,
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