at.adsb.flight.defs

{
  "id": "at.adsb.flight.defs",
  "defs": {
    "position": {
      "type": "object",
      "required": [
        "latitude",
        "longitude",
        "timestamp",
        "source"
      ],
      "properties": {
        "source": {
          "type": "string",
          "maxLength": 32,
          "description": "Decoder-level source type that produced this position fix.",
          "knownValues": [
            "adsb_icao",
            "adsb_icao_nt",
            "adsr_icao",
            "tisb_icao",
            "adsc",
            "mlat",
            "uat",
            "mode_s",
            "adsb_other",
            "tisb_other"
          ]
        },
        "latitude": {
          "type": "string",
          "maxLength": 20,
          "description": "Decimal degrees north, WGS84. Negative for south."
        },
        "trackDeg": {
          "type": "string",
          "maxLength": 20,
          "description": "Track angle in degrees true north."
        },
        "longitude": {
          "type": "string",
          "maxLength": 20,
          "description": "Decimal degrees east, WGS84. Negative for west."
        },
        "timestamp": {
          "type": "string",
          "format": "datetime"
        },
        "altitudeFt": {
          "type": "integer",
          "description": "Barometric altitude in feet."
        },
        "groundSpeedKts": {
          "type": "string",
          "maxLength": 20,
          "description": "Ground speed in knots."
        },
        "verticalRateFpm": {
          "type": "integer",
          "description": "Vertical rate in feet per minute. Negative is descending."
        }
      },
      "description": "A single aircraft position report. Coordinates follow community.lexicon.location conventions: decimal degree strings, WGS84."
    },
    "contributor": {
      "type": "object",
      "required": [
        "did"
      ],
      "properties": {
        "did": {
          "type": "string",
          "format": "did",
          "description": "DID of the contributing receiver account."
        },
        "station": {
          "ref": "com.atproto.repo.strongRef",
          "type": "ref",
          "description": "Strong reference to the contributor's at.adsb.receiver.station record."
        },
        "lastSeen": {
          "type": "string",
          "format": "datetime",
          "description": "When this receiver last observed the aircraft."
        },
        "sighting": {
          "ref": "com.atproto.repo.strongRef",
          "type": "ref",
          "description": "Strong reference to the contributor's at.adsb.receiver.sighting record for this aircraft."
        },
        "firstSeen": {
          "type": "string",
          "format": "datetime",
          "description": "When this receiver first observed the aircraft."
        },
        "positionCount": {
          "type": "integer",
          "minimum": 0,
          "description": "Number of position reports this receiver contributed."
        }
      },
      "description": "A receiver that contributed data to a flight sighting."
    },
    "trackSummary": {
      "type": "object",
      "properties": {
        "origin": {
          "ref": "community.lexicon.location.geo",
          "type": "ref",
          "description": "First observed position."
        },
        "distanceNm": {
          "type": "string",
          "maxLength": 20,
          "description": "Great-circle distance between first and last observed positions, in nautical miles."
        },
        "destination": {
          "ref": "community.lexicon.location.geo",
          "type": "ref",
          "description": "Last observed position."
        },
        "maxAltitudeFt": {
          "type": "integer"
        },
        "minAltitudeFt": {
          "type": "integer"
        }
      },
      "description": "Summary of a flight's path without the full position history. Coordinates follow community.lexicon.location conventions."
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1,
  "description": "Shared type definitions for flight-related records in the at.adsb namespace."
}