{
  "target_markers_xyz": [
    [
      4.118361167633059,
      -0.9087173050743663,
      -0.1561487757604194
    ],
    [
      4.1220288007071435,
      -0.8946249277846093,
      0.05331289947311779
    ],
    [
      4.151245610494296,
      -0.6126005435615574,
      -0.17733185659268447
    ],
    [
      4.149876004775345,
      -0.5986963601478741,
      0.03329926102681635
    ]
  ],
  "target_center_xyz": [
    4.135102773735145,
    -0.7538912007420961,
    -0.061771659605492024
  ],
  "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."
}