at.adsb.receiver.sighting

{
  "$type": "com.atproto.lexicon.schema",
  "defs": {
    "main": {
      "description": "A receiver's batch sighting covering a configurable observation window.",
      "key": "tid",
      "record": {
        "properties": {
          "createdAt": {
            "format": "datetime",
            "type": "string"
          },
          "manifest": {
            "description": "Lightweight list of all aircraft observed in this window.",
            "items": {
              "ref": "#manifestEntry",
              "type": "ref"
            },
            "maxLength": 1000,
            "minLength": 1,
            "type": "array"
          },
          "rawCapture": {
            "accept": [
              "application/vnd.at-adsb.raw-capture+zstd"
            ],
            "description": "Raw demodulated SDR frames captured during this window, in ATRX envelope format. Optional — strengthens provenance but not required.",
            "maxSize": 2000000,
            "type": "blob"
          },
          "sources": {
            "description": "Deduplicated list of decoder source types that contributed position fixes in this batch window.",
            "items": {
              "maxLength": 32,
              "type": "string"
            },
            "maxLength": 50,
            "minLength": 1,
            "type": "array"
          },
          "telemetry": {
            "accept": [
              "application/zstd"
            ],
            "description": "Zstd-compressed JSON object keyed by ICAO hex, values are arrays of at.adsb.flight.defs#position objects.",
            "maxSize": 2000000,
            "type": "blob"
          },
          "windowEnd": {
            "description": "End of the observation window (exclusive).",
            "format": "datetime",
            "type": "string"
          },
          "windowStart": {
            "description": "Start of the observation window (inclusive).",
            "format": "datetime",
            "type": "string"
          }
        },
        "required": [
          "windowStart",
          "windowEnd",
          "manifest",
          "telemetry",
          "sources",
          "createdAt"
        ],
        "type": "object"
      },
      "type": "record"
    },
    "manifestEntry": {
      "description": "An aircraft observed in this batch window.",
      "properties": {
        "icaoHex": {
          "description": "ICAO 24-bit hex address (uppercased).",
          "maxLength": 6,
          "minLength": 6,
          "type": "string"
        }
      },
      "required": [
        "icaoHex"
      ],
      "type": "object"
    }
  },
  "description": "A batch of aircraft observations from a single receiver covering a configurable time window (default 60 seconds). Contains a manifest of observed aircraft and blobbed telemetry data.",
  "id": "at.adsb.receiver.sighting",
  "lexicon": 1
}