The EUROCONTROL Surveillance Information Service (SIS) provides a cyclic update of the ADS-B traffic as received by the ADS-B antenna on the roof of EUROCONTROL Experimental Centre at Bretigny (France). The traffic sample holds a mean 200 flights at daytime, with a geographical range from Brussels to Bordeaux. Due to ground impact, the farthest the aircraft is the highest it must be to be seen.
The service proposes 3 different payload formats, all derived from ASTERIX CAT62 data model. The frequency of update depends on the weight of the data on the network, with the aim of saving bandwidth.