ADSB tracks received are reported with undefined course (9999999.0) to CoT network

[dnlbaldwin]

Library version: 5.1.1 Platform: Raspberry Pi 4 8 GB running Ubuntu Server TAK Server: Taky 0.8.4

I'm seeing tracks that are received by dump1090 being reported with an undefined course when received at my TAK application. When I poll the /data/aircraft.json page it shows that the aircraft has a course, however it is received as undefined when reported from Taky.

/data/aircraft.json

{"hex":"c0211f","flight":"MAL7054 ","alt_baro":34000,"alt_geom":33725,"gs":422.9,"track":245.6,"baro_rate":64,"squawk":"1053","emergency":"none","category":"A4","nav_qnh":1013.6,"nav_altitude_mcp":34016,"nav_heading":253.8,"nav_modes":["vnav","tcas"],"lat":45.140076,"lon":-76.108458,"nic":8,"rc":186,"seen_pos":3.2,"version":2,"nic_baro":1,"nac_p":9,"nac_v":1,"sil":3,"sil_type":"perhour","mlat":[],"tisb":[],"messages":4396,"seen":2.9,"rssi":-16.7}

CoT

<event version="2.0" uid="ICAO-C0211F" type="a-n-A-C-F" how="m-g" time="2022-12-16T03:20:08.437Z" start="2022-12-16T03:20:08.437Z" stale="2022-12-16T03:22:08.437Z"><point lat="45.612396" lon="-74.596163" hae="5227.3" ce="9.0" le="1.0"/><detail uid="ICAO-C0211F"><UID Droid="ICAO-C0211F"/><contact callsign="MAL7054"/><track course="9999999.0" speed="208.34982"/><remarks>MAL7054 Squawk: 1053 C0211F Cat.: A4 adsbcot@ubuntu</remarks></detail></event>

[ampledata]

Hey Dan, Thanks for the report. Can you include your config.ini?

On Thu, Dec 15, 2022 at 7:40 PM Dan Baldwin @.***> wrote:

Library version: 5.1.1 Platform: Raspberry Pi 4 8 GB running Ubuntu Server TAK Server: Taky 0.8.4

I'm seeing tracks that are received by dump1090 being reported with an undefined course when received at my TAK application. When I poll the /data/aircraft.json page it shows that the aircraft has a course, however it is received as undefined when reported from Taky.

/data/aircraft.json

{"hex":"c0211f","flight":"MAL7054 ","alt_baro":34000,"alt_geom":33725,"gs":422.9,"track":245.6,"baro_rate":64,"squawk":"1053","emergency":"none","category":"A4","nav_qnh":1013.6,"nav_altitude_mcp":34016,"nav_heading": 253.8 ,"nav_modes":["vnav","tcas"],"lat":45.140076,"lon":-76.108458,"nic":8,"rc":186,"seen_pos":3.2,"version":2,"nic_baro":1,"nac_p":9,"nac_v":1,"sil":3,"sil_type":"perhour","mlat":[],"tisb":[],"messages":4396,"seen":2.9,"rssi":-16.7}

CoT

MAL7054 Squawk: 1053 C0211F Cat.: A4 @.***

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[dnlbaldwin]

Hi Greg,

Here's my config.ini:

[adsbcot]
COT_URL = tcp://<Local CoT server address>:8087
DUMP1090_URL = http://127.0.0.1:8080/data/aircraft.json
POLL_INTERVAL = 1

I just took a deeper dive into your code and maybe this is the culprit?

https://github.com/ampledata/adsbcot/blob/main/adsbcot/functions.py#L221

It looks like dump1090 is reporting course as 'track' and you're looking for 'trk'. I wonder if different versions of dump1090 report slightly different text in their aircraft objects.

[dnlbaldwin]

Hey Greg, do you have any comments on my PR?