The usage of VR gear in mixed reality applications demands a high position and orientation accuracy of all devices to achieve a satisfying user experience. This paper investigates the system behaviour of the VR system HTC Vive Pro at a testing facility that is designed for the calibration of highly accurate positioning instruments like geodetic total stations, tilt sensors, geodetic gyroscopes or industrial laser scanners. Although the experiments show a high reproducibility of the position readings within a few millimetres, the VR system has systematic effects with magnitudes of several centimetres. A tilt of about 0.4${}^{\circ }$ of the reference plane with respect to the horizontal plane was detected. Moreover, our results demonstrate that the tracking algorithm faces problems when several lighthouses are used.

中文翻译：

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VR系统姿态确定的准确性研究

VR装备在混合现实应用中的使用要求所有设备都具有很高的位置和方向精度，以实现令人满意的用户体验。本文在一个测试设备上研究了VR系统HTC Vive Pro的系统行为，该设备旨在用于校准高精度定位仪器，例如大地测量全站仪，倾斜传感器，大地陀螺仪或工业激光扫描仪。尽管实验显示了在几毫米之内的位置读数具有很高的可重复性，但VR系统具有数厘米大小的系统效果。倾斜约0.4${}^{\circ }$检测参考平面相对于水平面的角度。此外，我们的结果表明，当使用多个灯塔时，跟踪算法会遇到问题。