I searched the placement of ASTERIX Category 240 radar video data fields in a UDP packet. But I cannot find any useful info. Is there a standard for this work?

  • $\begingroup$ I don't think the Aviation section of the Stack Exchange is the appropriate section to ask this question. $\endgroup$ – Skip Miller Jun 8 '19 at 15:20
  • $\begingroup$ @SkipMiller I think it fits. Not possible for me to answer it from mobile phone now, but I am happy to take it later. $\endgroup$ – DeltaLima Jun 8 '19 at 16:27

The Asterix structure is explained in detail on this document on the Eurocontrol site.

Wireshark.org has a page explaining the protocol as well.

  • $\begingroup$ Thank you @GdD. Will I be able to decide whether the received packets are in CAT 240 protocol? You mean that I can decode & analyze & seen all necessary fields of CAT 240 by using Wireshark? I have downloaded and opened the sample pcap given page you shared. In which ASTERIX category are these UDP packets encoded? Is there a method? I want to say "Yes, this UDP packets in the Wireshark are ASTERIX Category 240 or Cat ..etc" $\endgroup$ – doner_t Jun 9 '19 at 9:49
  • $\begingroup$ Wireshark should be able to tell you if it's cat 240, that's just a field in a fixed length packet, so even if the wireshark decoder doesn't say exactly which category it is you could figure it out yourself using wireshark's built in tools. $\endgroup$ – GdD Jun 9 '19 at 10:02
  • $\begingroup$ Correct. I got it. For instance, shared Wireshark pcap sample are seen cat 048 and cat 034. $\endgroup$ – doner_t Jun 9 '19 at 10:11

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