Civil Engineering Reference
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Figure 6.34 UWB receiver and reference tag setup at the steel structure (NIST)
the user's spatial context can be accurately and continuously tracked in order to
precisely identify objects in the field of view. In this case, four transmitters were
deployed inside and around the area of the maze as shown in Figure 6.36, and one
receiver and the orientation tracker were mounted on the mobile user navigating
inside the maze.
The user's position and orientation were continuously obtained from the Indoor
GPS and magnetic tracker, and, similar to the UWB-based experiment, the tracked
values were used in the 3D OSG application to visualize the path of the user inside
the maze. The results of the experiments indicated that the Indoor GPS tracking
system consistently achieved a positioning uncertainty that fluctuated between 1
and 2 cm.
Figure 6.35 Deployment of UWB receivers around the steel structure (NIST)
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