Thank you for your willingness or interest to provide Mode-S EHS / ADS-B surveillance data to EMADDC.
There are two options to provide data to EMADDC via a local Mode-S EHS / ADS-B receiver:
- Request a receiver from Air Support through the EMADDC team.
- Purchase and install a local Mode-S EHS / ADS-B receiver.
AirSupport (AS) has entered a partnership with EMADDC and is the preferred option of the EMADDC team when using a local Mode-S EHS / ADS-B receiver. The AirSupport ADS-B network invites you as host to a new terrestrial-based ADS-B network for aviation use. AS will provide a fully installed receiver free of charge requiring only power, internet connection and a good field of view. The installation requires several network ports to be opened in your firewall (OUT) after which the data will be transmitted automatically via the cloud to AS and EMADDC. AS will continuously monitor the correct functioning of the receiver and provides software updates if necessary.
If you are interested to participate please send an email to firstname.lastname@example.org in order for the EMADDC team to check if a receiver can be provided.
The second option is more complicated and requires many more steps as you will have to setup the local receiver and software for uploading the data to EMADDC. The data format EMADDC requests and prefers is AVR data (see https://wiki.jetvision.de/wiki/Mode-S_Beast:Data_Output_Formats) with MLAT disabled. Only messages consisting of 112 bits contain usefull information. All shorter messages can be omitted.
Besides the binary data, we require to know which reciever received the data and the extact date and time of the observations in UTC including milliseconds. Thus, the content of the file shall contain individual lines adhering to the format below:
site/ident,date and time,binary data
Before EMADDC can process the local receiver data the EMADDC team requires information on the location of the receiver to calculate the position of the aircraft observations. For that reason the EMADDC team requests data supliers to provide a file containing the following information of each receiver present in the data provided:
// Format is num (order needs to equal ident), lat, lon, location name (elevation)
m00, 52.35149, 4.90188, Amsterdam 22.3m
m01, 52.10093, 5.17776, De Bilt 28.5m
Where REC_PREFIX described the naming convention for receivers (e.g, m01 or ADN01).
The data files should be uploaded onto the KNMI EMADDC SFTP server into a given sub-directory provided by the EMADDC team. Please refer to this page for detailed upload instructions.