{
  "target_markers_xyz": [
    [
      3.989189628224309,
      -2.7784559262913215,
      -0.1424864404290067
    ],
    [
      4.000473467444636,
      -2.7399148681128267,
      0.06118310606616206
    ],
    [
      4.129640436290891,
      -2.524132143519252,
      -0.20334340623469083
    ],
    [
      4.151051555257875,
      -2.485835323147233,
      0.005558263002413133
    ]
  ],
  "target_center_xyz": [
    4.06982228834559,
    -2.6328094208178476,
    -0.06942629309520454
  ],
  "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."
}