{
  "target_markers_xyz": [
    [
      3.1616550291156176,
      -0.07039069130578024,
      -0.1342067041895123
    ],
    [
      3.1579002092879778,
      -0.04129894356139179,
      0.07338182438668639
    ],
    [
      3.1525983642561686,
      0.22489529142753312,
      -0.17822704739469142
    ],
    [
      3.147393024137406,
      0.25442045905120625,
      0.030502931535670186
    ]
  ],
  "target_center_xyz": [
    3.154909123463171,
    0.09188443021129963,
    -0.05214976110794001
  ],
  "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."
}