{
  "target_markers_xyz": [
    [
      3.179616299061639,
      -1.5959814367325056,
      -0.30785370539330925
    ],
    [
      3.1854048374370127,
      -1.5760987468495575,
      -0.09951067175316797
    ],
    [
      3.2529040520242205,
      -1.3103871042140676,
      -0.34291459601216445
    ],
    [
      3.2560783726183367,
      -1.285752405882938,
      -0.1332881869246485
    ]
  ],
  "target_center_xyz": [
    3.218420221502114,
    -1.4421887665106081,
    -0.22074575634186466
  ],
  "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."
}