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LuxTrace: indoor positioning using building illumination

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Figure

Fig. 2 Comparison of indoor irradiance source measurements, based on Fig. 3.28 in [22]
Figure 4 shows the expected waveform for a straight trajectory equidistant to the walls down a corridor
Fig. 6 Absolute position estimation error (APEE) of the empirical model
Figure 7 depicts the system architecture of the combined approach. The solar cell and RFID reading parts acquire sensed data; the model learning and estimation module is used for training and displacement estimation
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