aviconv-asterix 0.0.1

Decode-only EUROCONTROL ASTERIX reader: CAT021 (ADS-B) and CAT062 (system tracks) to JSON.

aviconv-asterix

Decode-only EUROCONTROL ASTERIX reader — part of the aviconv converter family.

Supported categories (pinned editions):

Category	Content	Edition
CAT021	ADS-B Target Reports	2.6
CAT062	SDPS System Track Data	1.20

Scope

Decode-only by design. ASTERIX is a binary sensor/tracker wire format; aviconv's job here is getting surveillance data out of binary into typed, JSON-serialisable records. Encoding (building ASTERIX from records) is out of scope.

A decode subset of each category is mapped to typed fields (data source, times, WGS-84 positions, flight levels, velocities, identity); every other present data item is still measured via its UAP layout and preserved hex-encoded in raw_items, so nothing on the wire is silently dropped. If a record sets an FSPEC bit with no UAP entry (edition mismatch), that data block is undecodable — the block LEN is used to resynchronise at the next block (--skip-errors).

Usage

from aviconv_asterix import iter_records

records = list(iter_records(open("radar.ast", "rb").read()))
print(records[0].callsign, records[0].lat, records[0].lon)

CLI (NDJSON, one record per line):

aviconv asterix decode radar.ast
aviconv asterix decode - < radar.ast          # binary stdin
aviconv asterix decode radar.ast --skip-errors -o out.ndjson

Licence

MIT. The ASTERIX category specifications are published by EUROCONTROL; this package is not endorsed by or affiliated with EUROCONTROL.