{
  "target_markers_xyz": [
    [
      4.162695148562942,
      2.656629989554346,
      -0.12874285249326323
    ],
    [
      4.14279111344403,
      2.6790270177623587,
      0.0785360711053924
    ],
    [
      4.001537952307908,
      2.9031556883252034,
      -0.17436473277381537
    ],
    [
      3.9786829080151325,
      2.9247021869723557,
      0.03533080130927413
    ]
  ],
  "target_center_xyz": [
    4.071360461642499,
    2.7910692295803554,
    -0.047202179660457144
  ],
  "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."
}