Flight_Monitor

The purpose of this personnal project is to create a interface to track plane like https://www.flightradar24.com or https://globe.adsbexchange.com.

Data come from the web site The OpenSky Network (https://opensky-network.org). To get the data, I use the API and the command

curl -s "https://opensky-network.org/api/states/all" | python3 -m json.tool

Without an account, the data is only available every ten seconds. Information about a plane is organized in a JSON file as follows :

• icao24 (string) : Unique ICAO 24-bit address of the transponder in hex string representation.

• callsign (string) : Callsign of the vehicle (8 chars). Can be null if no callsign has been received.

• origin_country (string) : Country name inferred from the ICAO 24-bit address.

• time_position (int) : Unix timestamp (seconds) for the last position update. Can be null if no position report was received by OpenSky within the past 15s.

• last_contact (int) : Unix timestamp (seconds) for the last update in general. This field is updated for any new, valid message received from the transponder.

• longitude (float) : WGS-84 longitude in decimal degrees. Can be null.

• latitude (float) : WGS-84 latitude in decimal degrees. Can be null.

• baro_altitude (float) : Barometric altitude in meters. Can be null.

• on_ground (bool) : Boolean value which indicates if the position was retrieved from a surface position report.

• velocity (float) : Velocity over ground in m/s. Can be null.

• true_track (float) : True track in decimal degrees clockwise from north (north=0°). Can be null.

• vertical_rate (float) : Vertical rate in m/s. A positive value indicates that the airplane is climbing, a negative value indicates that it descends. Can be null.

• sensors (int []) : IDs of the receivers which contributed to this state vector. Is null if no filtering for sensor was used in the request.

• geo_altitude (float) Geometric altitude in meters. Can be null.

• squawk (string) : The transponder code aka Squawk. Can be null.

• spi (bool) : Whether flight status indicates special purpose indicator.

• position_source (int) : Origin of this state’s position: 0 = ADS-B, 1 = ASTERIX, 2 = MLAT

References

Matthias Schäfer, Martin Strohmeier, Vincent Lenders, Ivan Martinovic and Matthias Wilhelm. "Bringing Up OpenSky: A Large-scale ADS-B Sensor Network for Research". In Proceedings of the 13th IEEE/ACM International Symposium on Information Processing in Sensor Networks (IPSN), pages 83-94, April 2014.