{
  "target_markers_xyz": [
    [
      4.783763287626087,
      -0.9821656382905615,
      -0.10064829529760355
    ],
    [
      4.782075975242898,
      -0.9626919970190768,
      0.10812159462473292
    ],
    [
      4.810688621420793,
      -0.6867211575751637,
      -0.13199558509505427
    ],
    [
      4.810569888988224,
      -0.6660378002214364,
      0.07830174164357073
    ]
  ],
  "target_center_xyz": [
    4.796841870142523,
    -0.8243750549018022,
    -0.011614431355922106
  ],
  "description": "4 individual corner-reflector target markers ('CalibrationTarget-Marker 1..4'), mean over ~630 raw OptiTrack frames for this position, transform-corrected into the published radar-centered frame (see calibration/axis_convention.json). target_center_xyz is the corresponding transformed rigid-body centroid."
}