{
  "target_markers_xyz": [
    [
      0.8190565798258497,
      -0.39550486035296517,
      -0.07181338626982847
    ],
    [
      0.809731502650553,
      -0.3713227999200668,
      0.13663438511561
    ],
    [
      0.8887890410667179,
      -0.10702817051512598,
      -0.10319387365384936
    ],
    [
      0.8774187137410505,
      -0.0822776745308644,
      0.10597010542197527
    ]
  ],
  "target_center_xyz": [
    0.8490695847842219,
    -0.2388981553337025,
    0.016677231876747856
  ],
  "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."
}