{
  "target_markers_xyz": [
    [
      2.4955835484735447,
      1.7719333327476148,
      -0.3856561963360663
    ],
    [
      2.5198147301222327,
      1.8224242280682104,
      -0.1834232445149766
    ],
    [
      2.2829403236613373,
      1.9787386573363512,
      -0.4138934126606648
    ],
    [
      2.306850016041329,
      2.0297061352862538,
      -0.21013358272032523
    ]
  ],
  "target_center_xyz": [
    2.4013871608860007,
    1.9011909164802479,
    -0.2984600676606761
  ],
  "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."
}