{
  "target_markers_xyz": [
    [
      2.8639766426737445,
      -0.7246848740882813,
      -0.13389090444719942
    ],
    [
      2.8670668971097766,
      -0.6952537327297128,
      0.07347427343384116
    ],
    [
      2.9181620137100888,
      -0.43490874319146405,
      -0.17827549503598572
    ],
    [
      2.9197154392652345,
      -0.4037275199267288,
      0.03094425226185349
    ]
  ],
  "target_center_xyz": [
    2.8925319620328036,
    -0.5643433923475379,
    -0.052024128355662835
  ],
  "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."
}