{
  "target_markers_xyz": [
    [
      4.211145951342287,
      0.00832414010730883,
      -0.4415030489351415
    ],
    [
      4.258353635361573,
      -0.016006409324672295,
      -0.23862627073245402
    ],
    [
      4.2011974259470835,
      0.30372957107881066,
      -0.40724928852755604
    ],
    [
      4.245919946263471,
      0.2803926311769653,
      -0.20212391204610758
    ]
  ],
  "target_center_xyz": [
    4.2292239162272045,
    0.14431703131451507,
    -0.322368637586834
  ],
  "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."
}