{
  "metadata": {
    "version": "2.0",
    "description": "Radar visualization data structure",
    "generatedAt": "ISO-8601 Timestamp"
  },
  "radarFrames": [
    {
      "frameId": "Number (Unique Frame Index)",
      "timestamp": "Number (Seconds/ms)",
      "timestampIso": "String (ISO-8601 for human readability)",
      "egoState": {
        "velocity": { "x": "Number", "y": "Number" },
        "speedKmph": "Number",
        "correctedSpeedMps": "Number",
        "accelerationMps2": "Number",
        "yawRate": "Number",
        "motionState": "String (e.g., 'MOVING', 'STATIONARY')"
      },
      "vehicleData": {
        "shaftTorqueNm": "Number",
        "engagedGear": "Number"
      },
      "environment": {
        "barrierLimitsX": { "min": "Number", "max": "Number" }
      },
      "sensing": {
        "iirFilteredVelocity": { "x": "Number", "y": "Number" }
      },
      "activeTrackIds": ["Number (List of Track IDs visible in this frame)"],
      "clusters": [
        {
          "id": "Number",
          "position": { "x": "Number", "y": "Number" },
          "velocity": { "radial": "Number", "x": "Number", "y": "Number" },
          "azimuth": "Number",
          "flags": {
            "isOutlier": "Boolean",
            "isStationaryInBox": "Boolean"
          }
        }
      ],
      "pointCloud": [
        {
          "position": { "x": "Number", "y": "Number" },
          "velocity": "Number",
          "signal": { "snr": "Number", "clusterId": "Number" },
          "flags": { "isOutlier": "Boolean" }
        }
      ]
    }
  ],
  "tracks": [
    {
      "trackId": "Number",
      "status": {
        "isConfirmed": "Boolean",
        "classification": "String (e.g., 'VEHICLE', 'PEDESTRIAN')"
      },
      "historyLog": [
        {
          "frameId": "Number",
          "state": {
            "position": { "x": "Number", "y": "Number" },
            "velocity": { "x": "Number", "y": "Number" },
            "covariance": { "xx": "Number", "xy": "Number", "yx": "Number", "yy": "Number" },
            "isStationary": "Boolean"
          },
          "prediction": {
            "position": { "x": "Number", "y": "Number" },
            "velocity": { "x": "Number", "y": "Number" }
          },
          "shape": {
            "ellipse": { "major": "Number", "minor": "Number", "angle": "Number" }
          },
          "safety": {
            "ttc": "Number",
            "ttcCategory": "String (e.g., 'CRITICAL', 'HIGH')"
          }
        }
      ],
      "derivedData": {
        "ttcCategoryTimeline": [
          { "frameId": "Number", "category": "String" }
        ]
      }
    }
  ]
}