{
  "target_markers_xyz": [
    [
      4.065427557139665,
      -2.2610470128010007,
      -0.4191903065043996
    ],
    [
      4.108701520009454,
      -2.2519462952440787,
      -0.21433771600907758
    ],
    [
      4.173909378395445,
      -1.982595337013691,
      -0.45852062955496886
    ],
    [
      4.217358712684458,
      -1.9751035891060897,
      -0.25053302938755184
    ]
  ],
  "target_center_xyz": [
    4.141729375753671,
    -2.1184698128916732,
    -0.33542932586227026
  ],
  "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."
}