{
  "target_markers_xyz": [
    [
      4.928257127161933,
      0.1431957601421298,
      -0.2398047820563649
    ],
    [
      4.922191939894342,
      0.16204706233050137,
      -0.03122866127353663
    ],
    [
      4.907794483176171,
      0.4397012838884887,
      -0.26952638781954064
    ],
    [
      4.900299902945733,
      0.4590893518007818,
      -0.058989206758732315
    ]
  ],
  "target_center_xyz": [
    4.914523466113865,
    0.30075965637272944,
    -0.14994635256384958
  ],
  "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."
}