Naviation Live Traffic Feed – UTM Sweden

This WebSocket API provides real-time surveillance data of airborne traffic for situational awareness and deconfliction purposes.

WebSocket

Streaming endpoint

wss://traffic.utmsweden.se/streaming/?api_key=yourKey

Establish a WebSocket connection to receive a continuous stream of aircraft reports in real time as they are picked up by the antennas.

Each message contains one JSON object representing one aircraft.

Aggregate endpoint

wss://traffic.utmsweden.se/aggregate/?api_key=yourKey

Establish a WebSocket connection to receive an aggregate of all aircraft reports every 2 seconds.

Each message contains an array of JSON objects where each JSON object represents one aircraft.

Authentication

All connections must include your api_key as a query parameter.
If you have lost your key, contact contact@naviation.se

Sample Message

A single aircraft report received from the WebSocket feed might look like this:

{
    "timestamp": 1749157778,
    "craft_id": "4cc581",
    "callsign": "ICE63E",
    "latitude": 57.04418117717161,
    "longitude": 6.05559318296371,
    "altitude_feet_sea_level": 36000,
    "altitude_meters_sea_level": 10972.8,
    "height_feet_above_ground": 35825,
    "height_meters_above_ground": 10919.5,
    "speed_knots": 455,
    "category_code": "A3",
    "category_plain_text": "Large (> 75,000 lbs)",
    "icon": "JET",
    "icon_url": "https://media.dronerequest.eu/aircraft/jet-plane.png",
    "reported_compass_direction": 377,
    "calculated_compass_direction": 324,
    "signal_quality": -89
}

Field Descriptions

timestamp: Unix epoch time when the position was reported.
craft_id: Internal unique ID for the craft.
callsign: Reported flight callsign (if available).
latitude, longitude: Position in WGS84 decimal degrees.
altitude_feet_sea_level, altitude_meters_sea_level: Altitude above sea level.
height_feet_above_ground, height_meters_above_ground: Estimated height above terrain.
speed_knots: Speed in knots.
category_code: ICAO aircraft category (e.g. A3).
category_plain_text: Human-readable aircraft weight class.
icon: Symbol type used for map visualisation (e.g. JET, ROTOR, PROP).
icon_url: Path to an image file representing the relevant aircraft type (e.g. JET, ROTOR, PROP).
reported_compass_direction: Heading reported by the source.
calculated_compass_direction: System-calculated course over ground.
signal_quality: Signal strength indicator (RSSI or equivalent).

Notes

This feed is broadcast-only. No messages are accepted from the client.
Multiple updates per second may be sent per aircraft depending on data source.
Future versions may include source identification, climb/descent rates, or conflict annotations.

For support or feedback: contact@naviation.se