{
  "target_markers_xyz": [
    [
      4.48087446419193,
      0.9204429312596585,
      -0.3065353896163725
    ],
    [
      4.475353208773085,
      0.9442737619644207,
      -0.09784290091609815
    ],
    [
      4.426733598579174,
      1.2111424926047785,
      -0.3437072459302135
    ],
    [
      4.42211562059145,
      1.236039342142433,
      -0.1333966695772244
    ]
  ],
  "target_center_xyz": [
    4.4512413223586735,
    1.0782210639350156,
    -0.22025100775183803
  ],
  "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."
}