FLARM
As of Feb 2025 we are currently updating the FLARM decoder. You can still connect your reciever and feed data but the decoded dataset has problems. We expect to have this back up and running in the next few weeks! Keep an eye on our Discord for updates.
OpenSky Network now supports FLARM data collection in addition to ADS-B and Mode-S for research purposes. To contribute your FLARM data, you need an OGN receiver. If you already have one set up, sharing your data is straightforward. If not, you will need to install and configure an OGN receiver before proceeding. You can find the installation guide on the OGN Project website.
Once your receiver is set up and configured, the FLARM aircraft detected by your station will appear on the OpenSky Explorer, and the raw messages received by your station will be stored in OpenSky’s Historical Database for research purposes. OpenSky is also developing collaborative decoding, which will help reconstruct weak signals received by multiple sensors. This feature could be particularly useful for tracking aircraft in low-coverage areas.
Step 1: Configure Your OGN Receiver to Feed FLARM Data
If you already have an OGN receiver running, simply update your
OGN configuration file (ogn.conf) to add the following line under the Demodulator section:
Demodulator: { MergeServer = "flarm-collector.opensky-network.org:20002"; };
Save the file and restart the OGN service to apply the changes.
Step 2: Alternative Setup for Preconfigured OGN Images
If you are using the "Ready-to-use" OGN image by Sébastien
Chaumontet, modify the OGN-receiver.conf file located in the /boot partition.
Update the configuration as follows:
ReceiverName="MyReceiverName";}; Demodulator:{ MergeServer = "flarm-collector.opensky-network.org:20002"
Save the file and reboot your device for the changes to take effect.
Step 3: Verify Data Sharing
Once configured, your receiver will start feeding FLARM data to OpenSky. You should be able to see the aircraft received by your station on the OpenSky Explorer. The raw messages will also be stored in OpenSky’s Historical Database, contributing to research efforts.
Currently, OpenSky does not provide detailed statistics about individual FLARM sensors or feeds. However, if you have any questions or run into issues, feel free to reach out to the OpenSky team for assistance.